[sidebar]It’s not a squat, we promise! In fact, it’s crazy simple. All you need to do is roll over the ball, like you’re in the top of a pushup position with the ball underneath your pelvis. Then do some quick flutter kicks while keeping the rest of your body stable. It feels easy, but it’s actually a great workout for your glutes, thighs, and core. Watch above as Pilates expert Erika Bloom demonstrates how to properly perform this amazing exercise. For more Pilates exercises, check out The Women’s Health Big Book of Pilates by Brooke Siler and the editors of Women’s Health.