Sleep to slim down

Taken from Reader's Digest December issue:
Research has shown that people who sleep for a few hours a night will experience an 18% decrease in leptin, a hormone that tells the brain that you're full, and an 28% increase in grehlin which cause hunger in their bodies. Another study also found those on 5 hours sleep per night are 50% more likely to be obese as those getting at least 7 hours.
So cool right? It plainly shows how important it is to get enough sleep!