Lack of Sleep-Surprising Reason You're Gaining Weight

There are two issues at work with sleep and weight gain. The first is intuitive: If you're up late, the odds are greater that you're doing some late-night snacking, which will increase your calorie intake. The other reason involves what's going on biochemically when you're sleep deprived. Changes in hormone levels increase hunger and appetite and also make you feel not as full after eating.