No foods guarantee sweet dreams, but certain bedtime snacks can help you sleep. For example:
Turkey and whole-grain cereals contain tryptophan, an amino acid that helps boost levels of serotonin, a neurochemical that contributes to relaxation and sleep.
Cherries contain melatonin, which regulates sleep/wake cycles.
Foods that are rich in magnesium (such as nuts and leafy greens) and calcium (such as milk, soy milk and yogurt) may also aid sleep.
Some people find that warm milk or decaffeinated herbal tea can soothes them and helps them relax before sleep.