I'm sure you've heard that binging on turkey will make you sleepy, and there's a reason for that. Turkey contains tryptophan, which some believe is the go-to amino acid for increasing serotonin (a calming neurotransmitter) and/or melatonin (a sleep inducing hormone) in your brain. Some say old wives tale, some say science, but clinical research has shown mixed results in regard to its effectiveness as a sleep aid.
Though turkey is the best known tryptophan-laden food, there are actually many more options containing a higher dosage including pumpkin seeds, caribou, pork chops, and soy beans. Check out the full list below for 20 snacks "spiked" with tryptophan—eat enough, and maybe they'll usher in that nice, drowsy feeling as you lie your overworked head on your soft, comfortable pillow.