Not only is laughter the best medicine -- it could quite possibly be the best way to work out too. Actually, you're probably laughing right now. See how it works those abs? I told you so.

OK, seriously. An hour of laughing can burn off as many calories as 30 minutes of lifting weights -- no joke. And this could help you shed once dress size or 11 pounds over the course of the year. How does laughing help you lose weight? Leading neuroscientists say it's because a bout of laughter is like a short, intense aerobic workout that uses muscles in both your face and stomach. Plus, laughing helps boost your confidence and ward off depression. Click here for Laura's take on why laughing makes you slim.

So I guess the only question is ... what makes you laugh? For me, this video does it every time.