I love the clamshell exercise, too. I do this simple movement on the floor, from the comfort of my yoga mat (or carpet), and it's done more for my hip mobility, core stability, and glute (buttock) ...

Given its surge in popularity over the last couple of years, I know I'm not alone in my love for Pilates - especially when the likes of Harry Styles, Kim Kardashian, and Jennifer Anniston have all ...