Bananas
Bananas are filled with the natural muscle relaxants potassium and magnesium. In addition, they contain tryptophan, which is converted into serotonin and melatonin to help you sleep all night long.
Milk
There’s actually a truth to the idea that warm milk has soothing effects, although experts suspect that psychology has something to do with it. But dairy in general seems to work because calcium has a direct role in melatonin production.