Does Turkey Really Make You Tired?

If you start nodding off after your Thanksgiving turkey dinner, the bird may not be to blame.

Researchers at a New Jersey sleep center say the popular myth that turkey makes you drowsy isn't true. Even though the bird does contain the sleep-inducing amino acid tryptophan, not enough reaches your brain to have an effect.

Instead scientists blame holiday stress and traveling mixed with gobbling down too much food and alcohol.