6 Foods That Keep You Up at Night

You know chocolate has caffeine, but you may be surprised to hear that some of the darker bars can have as much as 80 milligrams—the amount in a can of Red Bull. As a general rule, the darker the chocolate, the stronger the stimulant.

A better sleep snack: Save the chocolate for breakfast (Really! Research shows it can help you maintain a healthy weight), and at night, snack on trail mix with walnuts, almonds and dried tart cherries. All three are good food sources of melatonin, a hormone that promotes a more restful sleep.