
46. Walnuts
Maybe you don’t have a huge sweet tooth, or you’re just in the mood for a “grab and go” snack. Walnuts are a great source of tryptophan, which then helps regulate your serotonin and melatonin levels. Additionally, they even contain their own source of melatonin, which means you will fall asleep even faster if you make these part of your snack habits. Like with any snacks, you still will want to watch your intake, as they can easily add up calories quickly! One serving size of walnuts is about one ounce, or fourteen halves.