It's all about short bursts of activity. Rest, then repeat.
BY Darcy Jacobs
The only thing worse than an incredibly painful sunburn? An incredibly painful, itchy sunburn.
By Jeannette Moninger
Your immune system puts up a pretty good fight against germs and infections, but sometimes your inner warrior mistakenly starts picking on the good guys. When your own defense system mistakenly attacks healthy cells in your body, you end up with an autoimmune disease.