Bathing suit season's right around the corner, and it's time to get in shape! Exercise isn't just good for your body, of course. It's a great opportunity to clear your head, get some fresh air, catch up with friends, or just be alone for a stretch of time. But some of us aren't as motivated as others, and it helps to be accountable to someone else.
We all need a little push from time to time -- someone to challenge us and motivate us. Which celebrity would you choose for your running partner and fitness guru?