Famous sister and professional socialite Kourtney Kardashian is also a noted Kegels enthusiast, and not just because it starts with the letter ‘K’. "Not a lot of people know me for committing just as hard to my husband as I do to my Keg-boxing," which is a workout fusion that combines high-impact boxing with Kegel-squeezing. In this snap from Shape Magazine, Kourtney is working on one of her power moves, "The Vulva Lunge."