15. Sleep away weight gain
Make a point of turning in earlier and you’ll see weight loss within a week. Research from the University of Pennsylvania found even just a few nights of sleep deprivation can lead to almost immediate weight gain. Scientists asked participants to sleep about 10 hours a night for two days, followed by five nights of sleep restriction and four nights of recovery. After the 11 days, the sleep-deprived group gained almost 3 pounds, compared with a well-rested control group.