30 Foods To Help You Sleep Through the Night
Whole Grains

Whole grains apparently help you sleep better because of the insulin! That's good because insulin helps your neurons process tryptophan, which means you get sleepier faster. Not to mention, the fiber is great for your body.
When you're looking to eat a whole grain for a nightly snack or an accompaniment for dinner, read the ingredients. Anything that doesn't start with "whole grain" or "whole wheat" has been processed. This type of food is processed very quickly, so your body won't get the full benefits.