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 to sleep well, later on.

4. Tomato sauce, chili, pizza, and spicy foods. Digestive disturbances are a common source of sleep problems, but many people fail to make the connection. Acidic and spicy foods can cause reflux, heartburn, and other symptoms that interrupt sleep.

5. The nightcap. A drink or two may make you feel more relaxed after dinner, but it comes back to haunt you -- literally -- a few hours later, by preventing you from achieving deep sleep. And because alcohol both dehydrates you and makes you have to pee, it wakes you up, too. Wine is high in the stimulant tyrosine as well.