When we think of Thanksgiving traditions, we all think of turkey, cranberries and pumpkin pie. But perhaps just as big a part of the tradition is the Thanksgiving Day nap.

There's no better way to follow up the food fest you just completed than with a hearty nap on the couch.

According to a survey conducted by Dunkin' Donuts, more than half of Americans will take a nap on Thanksgiving.Those behind the survey suggest that the reason naps are so popular on Thanksgiving is because it's the perfect way to avoid certain relatives. According to a recent study Turkey is actually a bad source of tryptophan. You can find more tryptophan in egg whites, soy, cheddar cheese, and chicken.