Day 23: Rainbow Butt! | 100 Glute Challenge w/ Meredith Foster


#100glutechallenge printable:

Since Taylor Swift did the 100 Ab Challenge, I had to invite my biggest Swiftie friend, Meredith Foster to do the 100 Glute Challenge!

Our Day 23 move is one of the hardest… rainbow butt!! Feel free to do the modification at any time if you get tired.

Subscribe to Meredith’s channel:
Follow her on IG!

Workout starts at 2:53!

Here is where I get all of my music! Epidemic Sound:

My outfit & yoga mat are from:


Cassey Ho is an award-winning fitness instructor, entrepreneur and online personality. As the creator behind Blogilates, the #1 female fitness channel on YouTube, she’s transformed millions of lives through helping them achieve their strength and weight-loss goals. She focuses on making fitness fun and the results are evident. Cassey’s unique format, POP Pilates©, which launched as a workout video on YouTube in 2009, has become a live fitness class that can be taken at gyms all over the world with over 3,000 POP Pilates classes being taught monthly. Her authenticity continues to shine through, making her one of the most relatable fitness icons online and beyond. She’s also the author of the best-selling book, Hot Body Year Round and is the designer of her own activewear line, POPFLEX.

With a wide range of free workout videos available, Cassey’s channel focuses on ab exercises, butt & thigh exercises, arm exercises, pilates, cardio routines, fat burning workouts, high intensity interval training workouts (HIIT), stretching and flexibility routines and so much more!


Blogilates and oGorgeous Inc. strongly recommend that you consult with your physician before beginning any exercise program.

You should be in good physical condition and be able to participate in the exercise.

You should understand that when participating in any exercise or exercise program, there is the possibility of physical injury. If you engage in this exercise or exercise program, you agree that you do so at your own risk, are voluntarily participating in these activities, assume all risk of injury to yourself, and agree to release and discharge Blogilates and oGorgeous Inc. from any and all claims or causes of action, known or unknown, arising out of Blogilates’ and oGorgeous Inc.’s negligence.


  1. This is so painful! My legs are so sore from working out yesterday too! It was my leg day yesterday so doing this was super duper intense! But it's DAY 23! I've been following this from Day 1 and it's been one HECK OF A RIDE!

    🔹️Joana Ceddia- the one and only, queen of commentary
    🔹️Liza Koshy – she gon' get those booty jokes out there and it's just gonna be fun
    🔹️Anna McNulty – I know she is young, like really young, but she has a great flexibility and her fans will be surprised to see her doing this.
    🔹️Alivia d'Andrea – I kinda see her like a younger version of you. She would benefit soo much from doing this with you. Plus she probably has a vocabulary of motivational quotes in her head, so she'll make it easier to push through.

  3. Ahhh I'm in pain! My shoulders. My wrists. My butt. My legs. My arms. My heart's beating fast. I am breathing hard. I had to go on my knees, no shame for doing the modification move!! I will most likely make it up by doing the "Rainbow Butt Song Challenge" video twice tomorrow.

    DAY 23: (kinda) DONE!

  4. Cassey~ why would you make us suffer~!!! 😭 100 on each leg!?! Wow~ I think my whole entire body might be sore tomorrow and… it doesn't help that I have work early in the morning too!

  5. Anyone see the result? Me!!! I definetely see and feel that my butt is bigger and rounder. omg i can't believe it. Thank you Cassey <3. You guys, keep doing, having fun and big butt will come haha

  6. This one sucked and I couldn’t tell if one count was over and back over or only over once. I did 50 each side counting one as over and back which equaled 100 each side. That was more than enough!

  7. I'd say a 6 pain level….That's cuz I did the #SummerSculptChallenge and got my glutes, thighs, arms, abs, waist, etc. SO fit! I've never felt stronger in my life! And what #CasseyHo said is SO TRUE, she once said, USE YOUR GLUTES TO WORK YOUR GLUTES, or USE YOUR LOWER BODY TO WORK YOUR GLUTES….U get the idea! And boy was she right! I've NEVER had a booty like this! And thx to u and my favorite hair guru and just all around sexy, AHmazing, super talented, hair EXPERT ARTIST @GuyTang, I now know how to twerk! YAS!!!! Thx y'all! Big hug and tons of love! xoxoJJ #PopArmy #Blogilates #PopPilates #GuyTang #CasseyHo

  8. Ok, #CasseyHo, I've heard u say u hv done this 2, I don't know wth I did wrong, but I really INJURED MY KNEES! It was just my bad right one (used to run track, and was ALWAYS the last one in the relay cuz I was smokin fast!) that I injured years ago, and it just started hurting abt 10 days into the #100GluteChallenge! Now, they BOTH HURT! What do I do???? Please advise any and all exercises or stretches or braces, wraps, whatever, I need SOMETHING to make my knee not hurt and don't want meds, I mean how do I get it to heal quickly and how can I cont. working out….Cassey PLEASE HELP!!! Thx! xoxoJJ


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