Some foods are naturally rich in tryptophan, serotonin and melatonin, the chemicals that regulate your body's internal clock.
Proteins and dairy - like nuts and yogurt - contain tryptophan, the amino acid you need to put your body to sleep. And carbohydrates - like breads and rice - can also help you sleep, since they help speed up the release of sleep-inducing chemicals, according to the National Sleep Foundation.
Here are 12 pre-bedtime snacks that are more exciting than chamomile.