The Real Reason Thanksgiving Food Makes You Sleepy

No Thanksgiving is complete without a turkey at the table—and a nap right after it's eaten. The meat has a bad reputation for making eaters sleepy, but is there really science to back that up?

Here's the lowdown: turkey contains the amino acid L-tryptophan, which produces sleep-promoting serotonin and melatonin. But turkey has about the same amount of tryptophan as other meats.