1. Anything with Caffeine
You know tea and coffee have this pick-me-up ingredient that can keep you awake at night, but did you know that chocolate and colas do, too? There are a few more sources that might surprise you. For example, some non-cola sodas also have caffeine. One citrus-flavored brand has 41 milligrams per serving—about half the caffeine in a cup of coffee. Energy bars and drinks often rely on caffeine for their boost. And watch out for ice cream and yogurt, particularly those with coffee, mocha or “java,” which is just another word for coffee.
A glass or two of wine may help you fall asleep, but it won’t be restful. According to the National Institute on Alcohol Abuse and Alcoholism, studies have consistently shown that having a drink or two within an hour of bedtime increases wakefulness during the second—and most important—half of the sleep cycle. You’re likely to wake up and not be able to get back to sleep readily, leaving you exhausted (and hungry) the next day.