Cassey Ho is an internationally renowned, award-winning fitness instructor, online personality, and creator of Blogilates, the #1 female fitness channel on YouTube with over 200 million video ...

This widely popular channel has close to 4.5 million subscribers and focuses on POP Pilates, PIIT28 and Bootcamp Sculpting. If you have no clue what those are, don't worry.

Now Cassey Ho, 28, is taking her viral videos to the studio, kicking off a partnership with 24-Hour Fitness, where her POP Pilates classes will be taught nationwide.

"Pilates is to me the number one core-strengthening workout and the number one body-weight workout," she says. "All you need is a mat and to know how to use your body." ...

Cassey’s website is packed with free fitness videos, nutrition tips, and mucho motivation—it IS where POP Pilates began after all! So grab a yoga mat because these are 10 of her best workouts ...