17. Banana

Bananas help fight insomnia in three powerful ways.” They are a source of magnesium, serotonin, and melatonin,” both precursors to melatonin and serotonin, important hormones that regulate sleep says Palinski-Wade. “Serotonin is a neurotransmitter that helps to regulate sleep as well as mood and appetite and magnesium promotes sleep by helping to decrease the level of cortisol in the body, a hormone that is known to interrupt sleep.”