My ballet teacher taught a very aggressive, but extremely effective stretching routine. A big part of that was learning how to stretch _safely:_ you can tear your muscles and seriously hurt yourself if you aren't careful. For any beginners reading this, don't try to rush through your stretches! Also, stretches shouldn't hurt - hovering at the edge of pain is one thing, but if you stretch so far that it _actually_ feels painful, then you've gone _way_ too far!
Had to learn that too with muscleaches for a day afterwards. Luckily I am quite flexible so I didn't tear anything but I learned a lot and stretching has become better now.
I doubt that. I have dancing classes over 10 years(classic dance, acrobatics, jazz...) and I have never seen a person have been harmed by stretching even if it was rough sessions with teacher applying mass. So with your own weight you can't do a harm to yourself if you know a basic technic of doing exercise. BUT there are health conditions when you must not stretch at all like arthrosis
Now are you telling me that flexibility does not increase because your muscles get looser, but it does because your brain chills out about it. Wow! My mind is blown and im loving it. Thank you!
The same happened to me while lifting weights. I started quad curls at 80lb and my legs were shaling like crazy even tho i felt fine. Over time i noticed the shaking was gone so i tried to add more weight. No shaking at 90? Ok lets try 100. I settled on 130 and still no shaking. I didnt magically grow stronger muscles from doing 80lb, my body simply allowed me to do more
@@phylippezimmermannpaquin2062 your body became more efficient at recruiting motor units, and you could have grown stronger muscles as they adapted to micro tears in muscle fibres.
@@phylippezimmermannpaquin2062that is so interesting! It makes me wonder about people experiencing increased strength during times of stress. It happened to me once when I was saving somebody's life and I've always been curious as to how. I suppose our brain lets us.
You guys are great, I'm a firefigher in Guatemala and we mostly respond to EMS calls, your videos help me a lot increase my knowledge of the human body and also help me improve my English. Please never stop posting videos. Keep it up. 🤗
I always admire firefighters no matter where they're from. You guys go through so much, from training to trauma. I thank you on behalf of anyone you've tried to help!
I started stretching at 55 slowly breathing , calming the nervous system , talking to my body reassuring it everything is ok .I’m now 60 and I can do the splits and my flexibility is incredible . I’m starting to do the box splits . My forward bend I’m flat .This is very interesting that the brain talks to the body , which is what I have been doing , may be that’s why I’m so flexible .
shapes and forms are overrated. feel yourself well in your body and that is enough (I teach deep release - you would be surprised how much a little movement can go - for eg starting to stretch joints, yes, read well, look into something called FRC, functional range conditioning)
Your videos are amazing, with all the anecdotal advice about exercise and health, it's so great to learn the real science behind everything. Thank you to your team for being really good teachers 😊
Starting at 7:46 you talked about proprioception. I had Guillain-Barré Syndrome a few years ago which paralyzed me from my feet to my hips. I use this order because it was a gradual process that occurred this way over time. While I did re-learn how to walk eventually, I was left with very little proprioception in my legs. So let me submit a real-life example of the importance of proprioception. Whenever you sit at a computer for a length of time, your feet "wander". They may be under the keyboard for a while, they may then be under the chair, one may be wrapped around one of the chair legs, etc. Standing up is no problem for you. You reposition your legs under the keyboard and proceed to get out of the chair. Not so for me. Without proprioception, I have to look to see where my legs are before getting up. There have been times where I've tried to get up and almost fallen because, unknown to me, my foot was wrapped around one of the chair legs.
Terry, I also have very impaired proprioception from a sudden brain injury that paralyzed one side of my body. I rewired movement in my brain, but my proprioception also didn't heal. I was trained in the hospital to always look at my feet and make sure I see them flat on the floor before I stand. I have difficulty with moving things around indoors, it is hard to put my limbs in the right places and synchronize their movements. I often have to consciously tell one limb to move first, then go through the series of deliberate muscle contractions to pick up a box and move it without dropping it or falling on top of it. It makes organizing a room very daunting and exhausting. I can't run, clap my hands, or jump. I don't even remember how the series of muscle contractions begins. I can't run through the series of muscles that I need to order to contract quickly enough for these movements to work. Somehow my body can take care of things if I fall from a height, like off a boulder or the top of a staircase. My body automatically positions itself to rotate and flip so I always land on my feet, like a cat. It's a bizarre feeling to have some part of my less conscious mind move my body so well when I can't choose to do simple movements.
@@naturalnashuan Reading your story made me think of becoming more proactive about the spinal arthritis condition ... especially the part about rewiring your brain...
This is similar to what I’ve read about Relax into the Stretch - don’t push it, go as far is comfortable with no tightness, rest into it for about 30 seconds, and slowly your brain adjusts its range over time. Excellent, thank you for this.
Wow, I am feeling like a medical student. This is the first time I am seeing real body parts being used for visualization like this. Such a great production. Thank you.
Some people are such gifted communicators. This guy is one of them - he's so compelling. I find myself unable to tear away even though I should really be doing other things.
I’m 58 and never stopped stretching. After a career teaching middle school, I started volunteering as a gymnastics coach at my local YMCA. To see these girl’s faces when I do the splits is priceless. I’m their grandmother’s age 😂.
I’ve noticed even consciously being aware of what muscles feel tight when I stretch a certain way and then consciously relaxing that muscle by breathing and using my mind to relax it will allow me to stretch further. I feel like a lot of it has to do with the fact that when you’re stressed or when your nervous system is on hyperdrive we tense our muscles which makes it harder to stretch them
Yea, this one. learning to do what I've come to call internally "microrelaxations" or "targeted relaxation" is very valuable for everything from stress to sexual control. The ability to be deeply aware of and control your muscles is something that I don't hear nearly enough about.
I really appreciate this video. I hate stretching because I find it unbearable, the sensations are wildly unpleasant. Knowing it's literally my brain going "nuh-uh" and not that my muscles will actually snap should make it easier for me to work through it. Thank you!
The key to easy stretching is a relaxed mindset, helps the body to relax and then stretching feels really good. Most animals stretch first thing in the morning by instinct.
You absolutely could tear something if you push too far. A safe stretch should be mildly uncomfortable NOT unbearable or wildly unpleasant. The point is that if you stretch every day your nervous system won’t panic when it’s put on a stretch and a gentle stretch will become a nice pleasant sensation. This does not mean you should push through a painful stretch. Stay safe and good luck training your body to enjoy stretching
@@movementwithmyhre6104seconding this, painful stretching is likely too far. There is a brain element but that brain element is trying to protect your body. “Unpleasant” can be many things, not all of them dangerous, but do listen to your body’s signals.
As others have said.. prob taking it too far too fast but ALSO, if stretching makes you feel that way, you ARE the person who needs it. We tend to gravitate toward what feels good. ALAS, what feels good is rarely the thing that will bring us growth (to a point). Keep going!
My PhD was all about the sensitivity control of the muscle spindles: ‘The Monoaminergic Control of Gamma Motoneurones’. It’ a riveting read but probably superseded by now. It was nice to hear you talking about spindles, dynamic and static phases of stretch, etc, and the content of my lectures and labs came flooding back! Thank you 🙏🏽
A few years ago, i decided to achieve side split. I searched how-to on RU-vid. I found one RU-vid which advised viewers to hold stretched position beyond bearable pain. The RU-vidr said that this trains our brain adjust to new level of stretching capacity. Now, your video explained this in more medical science way. This is a very good explanation. Thank you. By the way, I achieved side split after several months of stretch-hold routines and I am keeping up with stretching, weight lifting, cardio.
So...that is what most fitness guys call: "Muscle Mind connection" it's in reality called "proprioception". This video was wonderful, with really funny examples yet memorable.
I love Yin Yoga, it’s static stretching with long holds. It’s great to get into the connective tissues and fascia. It’s been called the foundation of youth due to the benefits of calming down the central nervous system by deep breathing.
Stretching works by engaging the musculoskeletal system and triggering physiological responses in the body. When a muscle is stretched, the musculoskeletal system, consisting of muscles, bones, tendons, and ligaments, comes into play. Muscles provide the body with the ability to move by contracting and generating tension, while bones offer posture and structural support. Connective tissues such as tendons and ligaments join the bones together at the joints and aid in movement. Stretching also affects the body's circulation and nervous system. When a muscle is stretched, blood flow to that area increases, allowing for more oxygen to reach the muscle and aiding in the removal of metabolic waste products. Additionally, stretching activates the parasympathetic nervous system, promoting feelings of calmness and relaxation. It can also lead to the release of endorphins, natural chemicals that act as neurotransmitters and have pain-relieving and euphoric effects. These physiological responses to stretching help improve flexibility, reduce the risk of injury, induce a sense of calmness, and potentially improve circulation. This information demonstrates how stretching works at a physiological level, providing insight into its benefits and effects on the body.
I always loved the "How it's made", or how day to day objects work. Ever since I found this channel, I'm starting to find out how my body also works. Great content! Keep up the good work!
I had a stroke and continued seizures... not anymore though. Stretching was one of the things nurse's had me do everyday to help my brain!❤ thank you see u
I'm not an anatomy student, but your videos have given me so much better understanding of how my body works (some of the previous ones about digestion etc in particular!). With this video in particular as somebody who only started yoga last year and trying to gain better flexibility to improve my dance training, I now have a better idea of how much extra stretching I should be doing during my free time. Looking forward to the collab! 💪
This video was really helpful! I shared this video with my husband to help to understand why it hurts to move his arm. He had a stroke and I had been trying to explain about what happens to the muscles in a reflex stretch. I have been trying to get him to understand why consistent, regular stretch is important! His entire arm and hand and partly his leg, is in a spastic position.
Beyond the brains involvement, there is the physical aspect I was hoping you would discuss. When I was young I had no flexibility. I went to a school of martial arts where the instructor said that my leg raise was limited by baby veins in the back of my legs that had failed to grow in length. The instructor would have me sit on the floor with my legs laying flat in front of me. Slowly, he would press on my back (full length) to apply additional stretching pressure and hold it for 5-15 minutes. The instructor said that I needed to think about anything else but the pain and that the baby veins would eventually stretch or break and cause bruises on the back of my legs. It was key that I didn't quit the process over 2 months or I would be left with less mobility. The legs must heal in the stretched position. I went from only being able to raise a straight leg waist high, to being able to raise a straight leg to my shoulder and then hold it at my shoulder while standing on the other leg. All these years later, I wonder if I wasn't also tearing muscle or ligaments when I had all that bruising on the back of my legs?
I'm going to say yes. Wow that's awful. I've watched people having their bicep tendons snap and muscles just gone. They need surgery to re-attach the tendon to the bone. Wow. I just can't fathom this.
I work at a very popular pet food warehouse. We always do basic stretches every morning. Neck, arms, hands, lower back, 2 different legs stretches. Been doing them for over a year now. They do help you feel better through out the day.
@@therealbloomercolfax4280 They call it a "catback" really it's just putting your hands on your hips and bending forward. like if a cat was going to jump on your back. then a simple backbend, leaning back and holding for 5 seconds.
That is a good habit to stick with, especially while doing any form of manual labor. I am a Union Electrician and on many jobsites we do "Stretch and Flex" first thing before starting any work. I also do yoga at home and that really keeps previous back issues I have had at bay.
@@therealbloomercolfax4280 there is this asana. (i don't remember the name) you have to touch the forehead to your knees while keeping your legs straight. There are two positions in which you can do this, while standing and while sitting on floor. The latter is harder ( for me ) this is forward bending, for backward bending chakrasana and dhanurasana are best but require spine flexibility so do these gradually. in my opinion it benefits in the long run IF you hold this posture for like a minute or so i used to hold it at ease maybe for 10 seconds i would also say do Surya Namaskar before you start your day, in my case it helps me keep energized. (and remember to not overdo these, it can be fatal if your count shoots up as it generates heat) and do this in early mornings and late evenings for the same reason (heat)
Omg, i have EDS and so hypermobility, and this explanation that proprioception is the "gatekeeper" of stretch makes so much sense now of why EDS causes hypermobility ! Since we know we have poor propioception, of course it will impact our mobility and the lack of barrier when we move and stretch ! That's extra interesting thank you so much for this video ! I really adore understanding my body more and more with each of your videos ^^
As an anatomy nerd with EDS, I was also super fascinated when I learned this last year! The Golgi tendon organs function analogously to the muscle spindles but instead of being within the muscle belly, they are found within the tendon at the ends of muscles. And tendons are, you guessed it, 65-80% collagen 😂. So it makes a lot of sense that those of us with certain collagen disorders are going to have an altered sense of where our bodies are in space, because the main source of that information is coming from nerves sensing the tension in collagen-filled tissues...but our collagen stretches differently than expected!
@@Tribuneoftheplebs No, it does not! At least not for EDS, I can’t speak to all collagen disorders. When you take in collagen in any form, your body digests it down to amino acids, which are then absorbed and can be used to build proteins (including collagen) within our cells. Because EDS affects the way our body builds and/or uses collagen (depending on the subtype), taking collagen in supplement form doesn’t have a beneficial effect on the structural integrity of our collagen. Basically, because the body needs to break down the collagen before absorbing it, when it is rebuild within our cells it is still build incorrectly. I hope that explanation makes sense! :)
Love you guys. You explain things simply and comprehensively. I'm 75 and not familiar with human anatomy, but you sure make clear and interesting and make me understand how important awareness is. Thanks so much from Italy. Keep up the good work!!
77 and living in Italy too. Have stretched all my life until an injury a couple of years ago. Have recently started again.Thank God I had stretched for decades because when I started again my muscles felt like cement. Then I think my brain kicked in and said, "Oh, yeah.I remember this." Stretching got easier day by day. Very interesting and helpful video. 👍🏻
It wasn’t until I got a muscle injury , until I started to take stretching seriously ! It’s literally the key ! To have a long lasting strength and endurance
So interesting …. My daughter died of a neurological disease called Werdnig-Hoffman syndrome… your explanation has helped me so much to understand what happened to her body as she was dying… thank you 🙏
Awesome class Sir, you have combined anatomy, exercise physiology, biomechanics and neurology into one that too in a highly interesting way, just like watching a movie ! Really good and most wanted for students around the globe. Keep posting Classes like these. Thank you so much
These videos are FABULOUS!!! Since we all know that teens will listen to ANYONE before they listen to their parents, I have been showing them these videos to back up what I feel they need to know. THANK YOU!
Omg, this actually explains why yoga helps with trauma..wessel van de kolk , in his book "the body keeps the score" explains that yoga and qigong and taichi help with trauma. But he could not explain why it works. So with this info i have maded the connecrion. By stretching you are actually scuplting the brain/nervous system back into safety. This awareness just brought tears to my eyes as i am now convienced this is the path to recovery.🙏🏽👊🏽🙏🏽
Watched a video in my Kinesiology class about a man who lost his proprioception (due to a brain injury I believe) He was eventually able to walk, but it really hit home how much you depend on that 'hidden' sense.
I am going to be adding weight training to my exercise routine. It's currently mostly consists of cardio including walking. Even though I'm training for strength and stamina and not size oh, I still think it's essential that stretching is included in these weight training exercises. Thanks for another great video. Love from Canada. 🇨🇦
Big kudos to the production team: such a pleasure to watch with pleasant-looking video-aid, fun stock vid cuts and very interesting footage of the actual body tissues! Very good video, keep it up, guys!
I never liked going to school bc i found it boring but this channel makes learning fun and interesting. Like i learn things without even realizing it. Thank you.
I'm kinda mind blown by how I came here to learn about stretching but also got information that explained a diagnosis I've had since I was a child, better than any doctor or physical therapist has ever been able to explain it. I have tactile overreactions, so when you mentioned the clothing example I was already aware of the sensations because my brain doesn't filter out irrelevant stimulus. It also constantly triggers contractions in my muscles, but stretching and working out has always helped me manage it. And now I think I understand why. Thank you for this super informative video!
I love stretching. It feels so good! And the hamstring stretch helps a lot with the tightness in my glutes, which in turn helps with my low back pain. And the sartorial stretch! *chefs kiss*
I appreciate your lectures a lot! Let me humbly add - I have learned this from a pain therapist who was also martial art teacher: - contract the antagonistic muscle strongly before stretching (also slow stretch technique) - and also again and again while staying in the maximum stretching position at about a pain level of 7 to 8 It increases the results dramatically - stretch for over 2 1/2 min without pausing, then two to three times a week can be sufficient for good improvement
I’m hoping you may be able to talk about a systemic collagen deficiency (EDS) and how that can cave many anatomical repercussions. I’ll be donating my body for this purpose. I hope that your work may inform the medical community for those of us still living with this.
me too. I don't have EDS but I am diagnosed with Hypermobility syndrome and it's been a whole new learning curve knowing what can help my atypical body. It's taken a long time to get this diagnosis because the standard health tests leave it under the radar (i.e. I have lower blood pressure than average, I am very mobile without any training). It's been frustrating because as wonderful as these stats are for your general doctor, you're still experiencing pain.
You've made so many lightbulbs go off for me. Ive always been flexible, danced alot when i was younger. I was diagnosed with Multiple Sclerosis in 09. Im in Physical therapy and im hyperexctended in my knees when i walk and stretch. I now understand so much more about my body!! Thank you!
This channel was so phenomenal and now that you are including health & wellness such as working out & stretching- this is more than superb! It is totally with the times and where we are heading. I hated stretching my whole life until I hit 50 and then I could not get enough! I still am tight in the hammies but everyone who sees me thinks I was always stretchie...and this is completely not the case! What I find most interesting is that we do not understand yet, how it all works. Great video and thx for your excellent teaching!
@16:18 to 17:20 Easy manageable routine for static stretching: for each target muscle group, stretch 5-6 days per week, hold for 30-60 seconds, do 2 sets. Thanks!
I love this video! For this life-long nerd, it's so satisfying to be able understand the intellectual underpinning of physical fitness, which has become my passion as I've gotten older. I will definitely take advantage of the advice here.
I know this is an older video but I wanted to drop quick comment as coach and trainer of 20 years who's practice revolves around the nervous systems role in movement...and who's been on his own posture and splits journey ☺️ First, I love the content you guys are putting out! I don't know how the algorithm just now offered you guys up to me but you guys are putting out some amazing educational videos! Secondly, and as far as the "best" stimulus goes for stretching adaptations, static isn't always best. You need to include other contractions types that keep the brain "interseted" and engaged. At higher levels flexibility training may resemble strength training in nervous system intensity and tissue rigor. This doesn't mean pain but working at extreme ranges will be uncomfortable and it needs to be to put an adaptive load on the body. If improved range of motion is your goal definitely find a good coach and surround yourself with others on the path because these adaptations can vary widely in duration to achieve but expect it to take in the years (looking at you side splits) and having a good teacher and community is key for consistency (and having fun!). May all your movement practices be playful, engaging and injury free!
Great Video as always!! On this same subject can you do a video that explains what happens to our muscles and why we get extreme muscle cramps in shins, calves and sometimes feet and toes? I never liked anatomy until I found your channel..now I am fascinated....lol...
Looking forward to hearing about strengthening the muscles that we are stretching and/or slowly losing if we’re over 50. I hear we lose about 1% a year. 😢 Especially if there is any difference an older persons muscles, being strengthened versus a younger persona muscles being strengthen. Some of us are learning late in life (50+)to use it or lose it! 😊
The only significant difference in musclebuilding for older people is body's decreased sensitivity to stuff. In this instance training volume and protein consumption should be higher in order to achieve same results as one would've starting training earlier in life.
sarcopenia...highest risk is low protein and sedentary live....older people need more protein, look for 1,2 -1,4g/kg (0.6-0.7g/pound) and any resistancetraining, any set/repetition from 6-30 is good if near failure.
@@zaidmuhammad862 Yes it has! My Doc added in my medical record malabsorption when I hit my 50s, at 56yo, I see the effects as things slowly decreasing in functionality. Menopause been a bogeyman!
I m a teacher in India. Usually felt very tired, exhausted, sleepy daily in school especially after lunch. Then i started stretching accidentally- now i feel active, vigorous, alert all day. Most astonishing thing that i didn't hope is that i fell much more confident the day i strtch in morning.
Your videos are so informative and you teach us stuff nobody ever told us. And i see nobody tells anything about video quality of your videos they are great fast and dynamic. Keep it up 🙂👏👏👏
Thank you for the video, you kept my attention the whole time. I love the use of the bones, muscles, and brain. I am a very animated personal trainer and in my classes some of the verbiage and illustrations you used in this video are how I explain different functions and movements of the muscles. You're awesome. You definitely have a new subscriber.
I really love looking at the ligaments and muscles in the video. So much easier to relate. I'm in the fitness industry and it all makes sense to be able to see what is where. Thank you🙏
I love your videos, guys. Watching periodically about different parts of our body and always smiling on how incredible and complex creatures we are! Thank you for your work and knowledge you share! 💙
If I may add a third housekeeping item: be careful if you're very flexible! I was having back pain off/on, and finally met a PT who said the standard exercises I'd been given by other PT's are good for *most* people, but they were actually doing me more harm than good! Hyper-flexibility is definitely too much of a good thing.
True, more is not always better, especially if you are hypermobile. If you are having pain it's definitely ideal to see a knowledgeable PT about which muscles you should actually be stretching.
I was a yoga teacher and my back would give out in the middle of a class. Being hyper flexible wasn’t good for me either. I no longer teach yoga and have included more strength training, mobility work and specific stretches that are good for my body. No more back pain!!
Your channel is genuinely one of my fav channels on RU-vid - super interesting topics, everything's explained in a way that's very easy to understand, and so much of it is not just interesting to learn but also actually useful in daily life. Just love it
Being in tuned with every part of your body is the most wonderful feeling because as you stretch, exercise, build up tone and muscle - no matter your age - muscles remember - yes they do. You may have gotten hurt and are not able to move for months but, the minute you start stretching slowly but surely, then the body and brain go - oh good we're at it again. Your serotonin, dopamine and neurotransmitters in the brain start dancing and then your body while getting tired - when it's at rest is happier because, you're given yourself the joy of movement. To feel your butt, gut, hips, ankles, neck and back, shoulders they're all yours!!! You're the master and you're in charge - this is one thing that we can control as long as we're balanced in mind, body and soul, so to is our lives being so much better and everything around us is so much more manageable and liveable. Good information and well delivered. Be user friendly with your body and it'll repay you for sure! Thanks.
I do pole dancing and I find it fascinating that once you're upside down, sometimes you'll just lose total body awareness of where your leg is, where your arms are etc. You get better at identifying it but it takes years and the more complicated the more hard it is to calibrate body awareness.
Interesting. I’ve never done pole dancing but I recall as a small girl hanging upside down in diff ways and needing help getting off from the same feeling of wait where are legs and arms now?😂
I am a dance teacher and when i have my students (kids) lay on their stomachs and bend at the knee they cannot tell me if they are pointing their toes to the sky or the ground without looking at them. Its so funny to watch them figure it out!
I love this video. It all makes so much sense about the nervous system. I really believe in the stretching so much since I have become older. So your saying 2 sets of 30 seconds. Hmmm I will try to start telling my clients thus. I'm a massage therapist and explain to my clients how important it is to stretch. I keep saying it's sad there's no classes just for stretching . Yoga classes can be very intimidating and if there were more classes that focused on stretching. Stretching for upper body stretching for lower body etc
Here is a question that kept itching my brain while I was watching this video: Can a hypnotherapist make people do the splits or stretches faster? By tricking the brain into believing that it's completely ok to send that signal to the muscle spindals.
Another jewel of knowledge. It blows my mind how much you guys know and how well you explain everything. Frustrating part is, you always hit a side topic that sounds equally fascinating, but "that's for another video" I just want to watch it all! I tried stretching to touch my toes, for a bout a year now, and I improved NOTHING. Damn brain.
You answered the question "how does muscle stretching occur". But I still have the question "why is this necessary?" I heard about increasing the range of motion of the joints. The question "why" still remains. Of course, we are not talking about circus artists and sports acrobats.
This is a great video and helps me understand my limited flexibility. Can you possibly do another video on how sitting 9 to 5 affects the lower back, glutes, hamstrings, and even slouching? And possible mitigation or remediation of those affects? People working in Tech will be thrilled!!
About modulating & prioritizing sensations, it's about prediction. As long as signals from the body roughly match what brain expects, we won't be aware of these signals. Unless we focus consciously - that decreases acceptable deviation between signal and prediction. Also, movements are caused by this working in reverse - you predict your hand to be in a different position than it is, and that drives muscles to make that prediction less wrong. > Attention. In PP, attention measures “the confidence interval of your predictions”. Sense-data within the confidence intervals counts as a match and doesn’t register surprisal. Sense-data outside the confidence intervals fails and alerts higher levels and eventually consciousness. > This modulates the balance between the top-down and bottom-up streams. High attention means that perception is mostly based on the bottom-up stream, since every little deviation is registering an error and so the overall perceptual picture is highly constrained by sensation. Low attention means that perception is mostly based on the top-down stream, and you’re perceiving only a vague outline of the sensory image with your predictions filling in the rest. (...) > Various research in the PP tradition has coalesced around the idea of autism as an unusually high reliance on bottom-up rather than top-down information, leading to “weak central coherence” and constant surprisal as the sensory data fails to fall within pathologically narrow confidence intervals. > Autistic people classically can’t stand tags on clothing - they find them too scratchy and annoying. Remember the example from Part III about how you successfully predicted away the feeling of the shirt on your back, and so manage never to think about it when you’re trying to concentrate on more important things? Autistic people can’t do that as well. Even though they have a layer in their brain predicting “will continue to feel shirt”, the prediction is too precise; it predicts that next second, the shirt will produce exactly the same pattern of sensations it does now. But realistically as you move around or catch passing breezes the shirt will change ever so slightly - at which point autistic people’s brains will send alarms all the way up to consciousness, and they’ll perceive it as “my shirt is annoying”. (...) > If the brain is mostly just in the business of making predictions, what exactly is the motor system doing? Based on a bunch of really excellent experiments that I don’t have time to describe here, Clark concludes: it’s predicting action, which causes the action to happen. > This part is almost funny. Remember, the brain really hates prediction error and does its best to minimize it. With failed predictions about eg vision, there’s not much you can do except change your models and try to predict better next time. But with predictions about proprioceptive sense data (ie your sense of where your joints are), there’s an easy way to resolve prediction error: just move your joints so they match the prediction. So if you want to lift your arm, your brain just predicts really really strongly that your arm has been lifted, and then lets the lower levels’ drive to minimize prediction error do the rest. > Under this model, the “prediction” of a movement isn’t just the idle thought that a movement might occur, it’s the actual motor program. This gets unpacked at all the various layers - joint sense, proprioception, the exact tension level of various muscles - and finally ends up in a particular fluid movement
Found this video in the middle of my morning stretches. Good timing! And also, annoying for me, my brain doesn't seem to deprioritize the feeling of my clothes on my body. I feel them all the time. Its very uncomfortable.
I was 15 minutes into your video when I realized human cadavers were directly behind you. At first, I thought it was an excellent plastic replica. Shocked. I spent a minute thinking. Wow. Someone agreed to be an organ donor and they are now in your video. Knowing your videos contain actual bodies, former living souls....it really affects my feelings to listen closely. Life is precious. We are all unique and we all must be aware of this human skin container that we are lucky enough to wear. I'm not sure I will sleep well tonight.
Great video! Would be great to see a follow-up video as to how gender differences anatomically leads to flexibility differences; i.e., why are women generally more flexible than men?
I just came back from a sports physiotherapy course and we talked a lot about muscle stretching and its effects on the muscle tone and injury prevention. Our teacher explained to us the physiology of stretching (muscle spindles etc) and we came to the conclusion that stretching after a workout or training is counterproductive for regeneration since we would increase the muscle tone instead of decrease it which we would like to do in regeneration. It was postulated that the only proper way to reduce muscle tone is by inhibiting its antagonist. Just like we do each morning when we sit at the edge of the bed and stretch, thereby contract our back muscle and inhibit our pectoral muscles. Also, we discussed the role of the stretch reflex in injury prevention and that it would make more sense to warm up doing exercises like single leg hops onto a bosu/togu/other brand. Same for shoulder warm up with a Swiss ball. So any exercise where the extremity is wobbly. This would train the specific musculature needed in dangerous situations such as landing on the ankle in a supinated position or having someone grab your arm when throwing, to contract quickly enough before damage happens to the tissue.
I was looking for an accurate video re: physiology of stretching etc. So engaging and well presented. Looking forward to your other videos. Thankyou for sharing your knowledge🌻
I had TKR, both knees same morning. Obviously lots of pain. Rehab was done at home. It was long and rough, but worth it. I had major problems sleeping for about 4 months, then it abruptly went away. I was very bowlegged, but that was corrected. I am not able to kneel, and I am a good Catholic boy..... I am 4 or 5 years out, and I can walk for miles with no pain. I'm now 68 years old, and this double knee replacement saved my life.
So why do we feel tightness after working out? Is this a physiological change in the muscle or an adaptation of the nerve system as well? (And if so, why does it make sense to adapt this way?) I'd also be curious about what other factors might inhibit range of motion, such as rigidities of the joint capsule (thinking about the shoulder joint here). Great topic and video!
Yes, the brain/nervous system is definitely only one piece of the puzzle. The soft tissues such as tendons, ligaments, fascia, muscles, joint capsule all play a role. Even the shape and length of your bones contribute to this. Definitely more to come!
This is a great explanation of how the brain, nervius system, and muscles work together. I have been teaching this same idea on my channel, The Muscle Repair Shop, for years and it is great to see someone with the same knowledge.
I have been doing 12 asanas every morning and holding each for 30-60 secs. These are from Dr. Fishman’s yoga stretches for osteopenia & osteoporosis. This sounds like what you’re talking about. I’m usually breathing into the stretch, relaxing on my back after all the asanas.
So much good information! I just love learning in the short sessions. So interesting! Thank you for this channel! I know you spoke about cough before, but I wonder how long it takes for something to pass through the (stomach?) so that it doesn't get brought up by a coughing fit. I know the two "pipes" (esophageal and trachea) are parallel and so coughing stimulates the esophagus to bring things back up. I have a chronic cough that is being looked into and I find this phenomenon especially irritating.
I’m pretty sure India has delved deeply into the benefits of stretching and flexibility on the mind body and soul. Thanks for adding info that speaks to those who cling to western info.
Thanx for posting, so people can learn about the importance of flexibility for their overall well-being. Lots of health problems that people have can be prevented or eradicated with increased flexibility and suppleness...wider range of motion, less pressure on joints and soft, flexible fascia...a true game-changer in life.
I LOVED this video! I majored in music instead of biology but I always loved bio and kinesthesiology. Thank you for providing great information for those of us who are really curious about this stuff ☺️
when i started doing yoga my memory went through the roof. im guessing this is because the nervous system fluids flow better. seriously back bends are like the best thing ever. being vegetarian helps too
I don't comment very often on videos but I would like to say that your channel does a very good job. I really liked the episode that pertained to the time length of seizures determines what type of seizure it is. Simple information like that is so critical to relaying to a first responder what you witnessed happening. Keep up the great work! 👍🏻🇺🇲
- just given you a THANK YOU $$. Your content is so necessary- if only people spent time learning about their bodies instead of looking at rubbish on social media about how the outside should look.
