Sculpt Your Gorgeous Core With This New Ab Routine ~ Tone It Up Bikini Series! 

Hi babes!! We’re SO obsessed with this new ab routine! Check it out at ToneItUp.com/?p=319198 and let us know what you think! Check in with us after on Insta @ToneItUp! xxo, K&K

Loved this. Miss the original TIU workouts 😅

This was soooo good, felt like old TIU before the app and the new trainers! Miss old K&K

This workout was so good. Felt it during workout rather than next day, that means it's working. Katrina is my favorite. Her voice is so relaxing and motivating and I like her workouts the best!

Thank you. This was a great workout and defiantly doable at....5:15 in the morning! :-) I'm really enjoying the workouts and appreciate all the time and energy you all put into them. Thank you so much!

Such a great workout👌 And Kat on the beach looking great in the all-white outfit, makes me wanna wear white for workouts too 😊

I'm so glad I opted to do the video instead of just doing the moves listed on the print-out version of this routine. There was more to the video than the print-out. Karena really packed a lot of great core moves into this efficient routine! Thanks.

Just finished this work out had so much fun and my abd are on fire ..ty for making this work out so much fun

i loved this so much!! she's so positive and encouraging which made me work harder!

Holy smokes!!! That was insanely good!! I feel amazing right now!!!!

Thank you! So positive and encouraging during the work out too! Thank you!

Great workout to pair with a yoga day!

I loved this workout so much in combo with the back workout today on Studio Tone It Up!! My new fave combo workout on the app, thank you so much Kat!

Love, love, love this workout. Lots of waistline work, just what I wanted! X

Love this workout! ❤️

Just did this workout on the TIU app and loved it! Great way to start the day 💞

Great workout,I have been doing it many times combined with abs daily moves.I

Really loved this abs workout it was BOOM ! I love it 💪🏼❤️

This was KILLER! Thanks Katrina!

This is a great workout. I almost stuck with the whole thing. Done a mile bike ride this morning , then this! Just got me some of the vanilla protein powder got to find one of the recipes to try!

This is amazing I am so slim now

I love it!!! One of my favorites for abs

OMG this Ab routine was AMAZING 😍😍

Katrina arms are looking Amazing!

Awesome! I love all your workouts, thank you !

Ready to get this in after work! can't wait! :)

This was killer after a cardio kickboxing workout but definitely one of my favorite so far. Thanks so much for another amazing routing. Kisses from Italy xoxo

what beach are you at, it's​ gorgeous! it looks like a green screen!! x

That hurt so good! Congrats on your baby!

Katrina you look amazing as usual. I have a question. Have you ever felt without improvement? And if so, what tips can you give us? Greetings from México!

Great routine Kat. You are the best

Thanks so much, Doll!! That was awesome!!

Loved this Kat! 💕

This was awesome.. i really felt it! Damn will do this more often 😊😊 Thank you 💕

Yes, yes, yes!!!☺ Thank you😍😄

Love it!!

Love it done it this morning 😘 😘😘

loved it, thanks!

Great workout my abs were burning

what brand is that bathing suit top?! it's gorgeous!!!

This was so good ! I feel it :)

Hi Katrina Thanks for an AMAZING Ab workout. I just have one compliant: your printable for this workout doesn't correspond to the video. Firstly nearly the whole first 5 minutes of the video is omitted from the printable. Further moves during the video is left out as well. Can you please fix this as some of us use the printable to work out to since working out to the actual video is not always easy. I don't know what is happening lately, whether you have someone else compiling your printables than in the past but the quality compared to what you did before is not good. Just saying. Love you girls & check RU-vid EVERYDAY for all your great videos, just disappointed with the printables on your website.

love love love love

Wow I just saw you on the news today

AHHHHHHHHHHHHHHHHHH IM DEAD!!!!!!!!!!!!!!!

Can i do that in my first trimester ?

Man Mindaugas

tone Lt up glrl ir man mindaugas sexy