A good night s sleep Sleep thinner

If you need a prompt to retire early, write this on a sticky note: “Lack of sleep may make me fat.” Research at Columbia University Medical Center found that people who got less than five hours' sleep a night were 50 percent more likely to be obese than those who slept for eight hours. Lack of sleep equates with raised production of an appetitestimulant hormone, and a reduction in a hormone that promotes the feeling of being sated.