A win-win: Sleep more and weigh less. People who don’t catch enough z’s eat 300 more calories a day.

Do your waistline a favor and hit the sack earlier. Not only will you be rested, you’ll be less likely to consume excess calories. According to a study at Columbia University, people who got 4 hours of shut-eye ate 300 more calories a day compared to those who banked 9 hours a night.

Women are more likely to overindulge, averaging 329 extra calories, compared with men’s 263. Another study found that drowsy dieters produce high levels of ghrelin, a hormone that triggers hunger and slows metabolism. Not only are you eating more when you’re sleep-deprived, you’re burning less fat! Being active also improves your sleep, so get moving too!