What's better for your brain -- napping or running around? According to sleep experts, your brain needs a break in order to perform better, and that napping is the key to better brain health. However, another Finnish study says exercise is the path to brain boosting and de-stressing. Who knows? I'd be willing to bet both are great for your body, so whichever you choose, here's Six Tips for Better Napping from WSJ's health blog, and 7 Surprising Ways Exercise Can Make You Happier.