How it works is that melatonin, a sleep hormone, is induced by tryptophan. According to the Sleep Foundation, 100 grams of tart cherries infuse your body with 9 milligrams of that tryptophan. What’s more is that the tart cherries also have their own melatonin, and can tell the body to up its own supply, according to research.

Source: https://www.distractify.com/p/tart-cherry-juice-sleep-hack-tiktok