Get ready to feel the burn. In this routine, you'll work your muscles as hard as possible for 40 seconds, while only resting 20 seconds. Keeping your muscles under tension for such a long period of ...

We're always looking for new ways to mix up our workout routines, and Cassey Ho, Pilates instructor and founder of Blogilates, just took it to the next level. In her newest workout video, Ho uses a ...