Muscle Fatigue: Why do muscles get tired and weak after exercise?

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What causes muscle fatigue, muscle tiredness and muscle weakness after a work out? Why do our muscles get fatigued, tired, weak, sore, burn and hurt after exercise? What causes our muscles to fatigue to the point where there is a physiological inability to contract, and why does it take time to recover from muscle fatigue?
Our Muscles get weak, tired and fatigued after use, but the reason for this is unclear. This video gives the reasons and three main hypotheses as to why we get muscle weakness and fatigue after use / workout / exercise, and explains the underlying physiology. This includes the impacts on Excitation-Contraction Coupling, Lactic Acid and wastes, the biochemistry, and energy causes. A better understanding of why our muscles get tired after a workout or exercise can also help you understand what's required in order to obtain an effective recovery.
Video By Christian Moro. Recorded in 4K @ 50fps.
#fatigue #muscle #exercise #tired #musclefatigue #muscleweak #workout #fitness #health #weight #tiredmuscle #soremuscle #skeletalmuscle

Опубликовано:

19 окт 2017

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Комментарии : 115

@Hiphop101ize 6 лет назад

So basically we don't know

@ethownzbh 6 лет назад

Congratulations, you watched the first 30 seconds of the video too.

@crypto2633 4 года назад

The muscle breaks and a newer stronger muscle replaces it. Kinda like calluses

@panedole 4 года назад

This was great, thanks, been searching for "what can help fatigue" for a while now, and I think this has helped. Ever heard of - Qiyia Ziyichael Booster - (Have a quick look on google cant remember the place now ) ? Ive heard some extraordinary things about it and my mate got great success with it.

@eduardocastaneda8369 5 месяцев назад

@@crypto2633no that does not haopen

@cagrieren5770 6 лет назад

Thanks for lucid scientific approach 👍

@Aidzorable 6 лет назад

Doc Moro can teach me about muscle fatigue any day ;)

@moszerker 6 лет назад

Another great vid Doc!

@maliwarhoda8442 2 года назад

Thank you for the excellent explanation 👍

@naroxcpe1964 4 года назад

Damn, this guy nailed it.

@medsim6638 6 лет назад

Great work! Well done.

@youngyoung9276 6 лет назад

Great video! Very helpful! I always wondered why my muscles get fatigued after exercise! Thank you!!

@iProCombo 4 года назад

I was under the impression that muscle fatigue isn't just general soreness/muscle exhaustion, but where the muscle has been pushed too far and will take longer than usual to heal and will return back to normal

@tatertot6212 Год назад

That would be muscle failure; fatigue (as far as the physics and biomechanics definition) means the muscle can not perform to its maximum but the task can still be done (soreness). Fatigue is good to build muscle, failure is not

@Albi623 3 года назад

I cant run without my legs stopping and I can feel a little pain in my hip when I try

@bbccrawling6831 4 года назад

I'm glad I found an explanation without the host being one of the IKA people (I Know All) this true is a hypothesis

@thesoul2871 3 года назад

lmfao fr fuck! 😭😭

@alzelalkhafef 3 года назад

Wonderful explaining 🌸

@fernandoflores4115 6 лет назад

WONDERFUL SCIENCE.

@milkteastocks5725 3 года назад

Great video!

@bi-linguecom105 3 года назад

Thank you. What are the applicable solutions??

@Gereon_ 6 лет назад

Wow amazing video, I dont want to know how long it took you to animate this video :o

@Joeoi 2 года назад

What about blood circulation ? I had tremor in left hand, tired legs almost crumps can't run anymore , and veines and nervesnalways visible on hands and feet

@drabmeraz7827 2 года назад

My shoulder and arm feel like I did curls as many as I possibly could and the burn never goes away

@michaelsingh843 3 года назад

I wonder if the functioning of the nerves causes heat hense its stops functioning until it cools down? Or it's a mental block to eliminate over training? Muscles are sore after Muscle building especially for beginners

@ghostyartists2006 6 месяцев назад

At some point,my arm is so weak that i cant do one 5kg rep,,but my right arm can,my left arm is too weak even if i rest for 2 days,what is the cause for this

$@inphiknitfractal$

@inphiknitfractal 5 лет назад

Muscle is piezo electric.. It takes electrical energy to work them, and oxygen to maintain motochondria function. Also, mitochondrea get damaged overtime and need to be replaced..look into mitochondrial biogenesis for more info.

@chrisawesome3091 3 года назад

Aren’t piezoelectric devices ones that release electricity when squished? So they would be the opposite of muscles (that being (with muscles) electricity is the reactant and the product is movement).

@marco7838 3 года назад

I got back in the gym after quite some time around 4/5 months of being inactive and I worked out on chest today. When I was benching pressing my body was literally shaking. My arms and the bar were shaking when I was bringing the weight up and down. Not sure why maybe because I’ve haven’t been as active as I once was....

@chilman6461 3 года назад

I'm the same after a work out could be low sugger

@danceswithghostsquickspiri697 2 года назад

Food intake can be one solution , rice cakes and banana before workout, about 40 mins before workout

@nunzioc8931 2 года назад

at 58 years of age..the gym hurts me..too much ache that lasts days..I believe at 58 I should not work out like a 28 year old..ive just been reducing sets to one set only..at lower weights..

@anatomy218 6 лет назад

Excellent!

@Mustang3445 2 года назад

Bro my fore arms are broken after the workout I did today like I can’t move my arms they are extremely tired

@mbk9998 5 лет назад

Ive been having sore chest for 2 weeks... and can’t no even do a push-up... I could easily do 50 before the workout

@nickjunior9865 4 года назад

Go to the doctor

@jasonrios3120 4 года назад

You prob have rhabdo dude

@virtualvendetta4439 4 года назад

Are you still alive?

@chrisawesome3091 3 года назад

@@virtualvendetta4439 he died 2 days after posting his comment :(

@virtualvendetta4439 3 года назад

@@chrisawesome3091 F

@jonathan21151 2 года назад

Let’s days it’s number three what would a person do to fix it ?

@daniablub 6 лет назад

Love this video!!!! I'm gonna be thinking about it next time I'm gyming😂

@praveenkumar-ct1xm 4 года назад

dania ok

@danielvibez4000 4 года назад

im not. dont want NOTHING holdin me back NOM SAIAYAN?

@shortv9807 2 года назад

HI SIR i am begging just once read this my mum was soo good she was going to Work everything was okey with her day by day she was getting weak and weak as a son it hurts me alot seeing my mum like that SHE can move her hand but her muscles aren,t working she can,t walk can,t open any kind of bottle even if u open and close SHE CAN,T open it PLEASE SIR HELP ME !

@jaden7608 2 года назад

I was lifting and went and fell straight on my face when I got in position

@brianban110 4 года назад

I've been feeling this lately. Today was leg day and I had the lower the sets i was doing by 40 pounds. I just woke up from a nap out of nowhere and feel a bit sore. my arms also feel a bit heavy too. I have a week were i don't touch a weight and do only bodyweight and conditioning.

@mannysmith7297 3 года назад

How are you feeling now?

@madhav5296 Год назад

@jaidensantiago9043 bro this happens when you do overtraining

@dawnroberts6688 3 года назад

Mine ache after I lift everyday stuff or ironing weird xx

@katieflyer3362 4 года назад

I been doing instense bicep curls and mine was so sore to the point my arm couldn't extend for best if three days and it recover I don't feel no inflammation or any pain but I can't lift as much as I use to. What happend?

@_MaximusM_ 4 года назад

So....what happend?

@Batman-nz2ue 4 года назад

@@_MaximusM_ wa happan

@ericlerma4867 Год назад

So what can I do to increase fatigue level? I do about 40 push-ups and my arms give out entirely? I want to increase but it’s seems after months of push ups I can’t push any higher. 😢

@tatertot6212 Год назад

Fatigue is different than muscle failure, if the task can not be performed you have surpassed the threshold for fatigue and the damage can not be repaired fast enough before your next session for muscle to build. I’m no body builder but I would suggest ending sessions before you give out and giving yourself off days to fully recover

@purplerainbow9002 6 лет назад

So why if muscle fatigue is caused by those three biological theories, why is it that the body supposedly gets stronger the more you work out? Muscles get bigger by tearing and rebuilding. How can one continue to work out for a longer period if time to gain strength and muscle mass when you get tired?

@michaelboniface2583 5 лет назад

Bon Gray would lose with shmind hearing you talk about lactic acid like that Mr Morrow

@exthousandbg3173 3 года назад

Hey question so i was walking around and a muscle in my back of my leg some how got fatigued just for walking for 2 minutes i din't work out are there any diseases that cause muscles to get fatigued easily is it something i need to be worried about and should i consult a doctor

@zxe_memezrdreams6364 3 года назад

You probably need to see a chiropractor for this, i had the same problem but for my back when carrying things at work and its caused by muscle groups being put under stresses thier not supposed to be under, in simple terms a muscle or groups of muscles arent working correctly so another group of muscles make up for the slack thus cause fatigue

@zxe_memezrdreams6364 3 года назад

And the cause for a muscle or group of muscles in the leg not working correctly is usually a pinched nerve in the leg or lower, middle back

@allyuooopward2252 4 года назад

I just went out and raked leaves and my entire body feels like jelly lol! Wanted to know why.

@danielvibez4000 4 года назад

because you used alot of force and maybe did it for long. if u havent done it or exercise lately then it is just ur body getting used to it. nothing to worry about =).

@sebastianbancroft7184 3 года назад

because you're out of shape.

@ominous4523 4 года назад

After some push up my left arms felt so weak

@animecompilation7193 3 года назад

Same me too my left arm gets weak

@mariajackson2677 2 месяца назад

Would eating more potassium and sodium help?

@scoobiezoobie3612 4 года назад

I'm not sure what video to watch, i'm 12, and for about a week now my arms have been feeling so week and it's been very hard to wrote at school and use them, especially my right arm, it hurts and it's getting worse, what should i do

@gibbygibbstein7858 4 года назад

Stop whatever you're doing, muscles need 2 to 3 days of recovery a week if you're overtraining them you'll damage yourself if you havent worked out recently, go to a doctor

@scoobiezoobie3612 4 года назад

@@gibbygibbstein7858 i went and he Said i have bad posture and my spine is bent it hit the nerves in my arms and i need to fix my posture

@katieflyer3362 4 года назад

@@scoobiezoobie3612 God bless you, you may have save me a trip to the doctor.

@Albi623 3 года назад

I cant run without my legs stopping wth

@emiliabrown445 6 лет назад

liked your vid!

@crazypeeps8641 Год назад

Why does the body get tired before one can target a muscle enough

@missbeauitful4696 6 лет назад

I've started working out & I'm type one diabetic I thought I was having a type o

@ahcryz2543 3 года назад

Same, I've been working out for a week, I feel like my muscles is breaking and getting weaker, I was worried.

@ishasheikh8182 2 года назад

What is the physiological importance of muscle fatigue?

@tatertot6212 Год назад

On a general scale you could say it’s to build muscle, that’s what we tend to want it to do- but on a scientific scale your body sends fatigue signals to protect your muscle and circulatory system etc . from being pushed too far and failing. However there are studies that suggest fatigue is not an optimal evolutionary strategy as in nature the animal to get fatigued first is usually the one to be eaten, so it kinda depends how you want to look at it

@takeitinblood4231 6 лет назад

my muscle fatuige fast im only 28 is there a reason i mean all muscles

@frenchvanilla7109 6 лет назад

Percy Possum what is deload weeks?

@Norrr3 6 лет назад

Same for me bro.. I can go to the gym pumped and ready to go! Then I start working out and I can’t do all my sets and my muscles get tired fast smh

@sierrasiennasavahnadesertn6605 5 лет назад

I found a product online called REDWOOD Natural Nitric Oxide Booster. It provides improved circulatory support. I read its product reviews and it sounds like an outstanding product. I want to try it. People are writing about the product and saying it makes them feel very young again.

@dawnroberts6688 3 года назад

My hands feel like they have fluid in them as well and seem to ache the more I use them x

@dawnroberts6688 3 года назад

@Chanonne M my doctor had ordered one I went today he thinks I might have osteoarthritis in hands because of my symptoms I have had all other test but they was ok x my mum has it in her hands and her dad had osteoarthritis as well so normal passed on x

@Adinthemoose 6 месяцев назад

Anyone else useing this for there anatomy class

@Tiger-uh7me 5 лет назад

Could you make a video regarding neurotransmitter

@gainails_art 3 года назад

Pourquoi écrire le titre en français ??!!!

@NavyaScienceNotesGallery 6 лет назад

👌👍

@danielvibez4000 4 года назад

my muscles get weak and because they are DANG TIRED.

@j0872 2 месяца назад

christian's muscles fatigue ME out

@ARusso22TV 5 лет назад

What can i take, what supplements?

@sierrasiennasavahnadesertn6605 5 лет назад

I found a product online called REDWOOD Natural Nitric Oxide Booster. It provides improved circulatory support. I read its product reviews and people are writing saying it makes them feel very young again. I want to try it.