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A word about turkey
We've all heard that turkey makes you tired because it's loaded with tryptophan. "Tryptophan is a precursor to serotonin, which is a mood modulator, inducing relaxation and supporting sleep," says Peeke. However, it's not the tryptophan that makes you tired. It's combining tryptophan with carbohydrates that does it, according to Peeke. When you think about Thanksgiving dinner, "it’s not the turkey that's causing Thanksgiving sleepiness," says Peeke. "It’s the turkey plus the cranberries, rolls and pie." And, she points out, turkey actually has slightly less tryptophan than chicken. So now you know.