The average person spends more than one third of his/her life asleep. But don't be fooled -- just because the body is sleeping doesn't mean it's slacking off. During sleep, the body repairs itself so that when the alarm clock goes off, our bodies are renewed and refreshed. Tossing and turning all night can affect judgment, productivity and the ability to retain information the next day. Over time, it can contribute to obesity, diabetes and -- of course -- a chronic bad attitude. (Did someone wake up on the wrong side of the bed this morning?) So check out our list on how to sleep better tonight -- and thank us in the morning.