How Does Stress Affect Your Weight?

Former Bachelor and Dancing With the Stars contestant Melissa Rycroft isn't too concerned with the planning aspect of her wedding, but she's already thinking about her wedding-day physique. She told People, "I've heard the stress alone of planning a wedding helps you get into shape for it, so we'll see if I need to stress myself out a little bit to lose that extra pound!"

Stress has been known to have the opposite effect on some people who are more apt to put on stress-induced pounds. How does your body react?