→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?s→’t naturally produce, but is essential to proper body function and, thus, must be acquired from food. The reason tryptophan is tied to drowsiness is that it is used by your body to create serotonin. Serotonin, among other things, acts as a calming agent in the brain and plays a key role in sleep. So with turkey containing tryptophan, one would logically say it would make you sleepy after you eat it… except, this isn’t actually the case. Want the text version?: http://www.todayifoundout.com/index.php/2010/07/turkey-does-not-make-you-drowsy-after-you-eat-it/ Sources: http://recipes.howstuffworks.com/question519.htm http://www.fi.edu/franklin/birthday/faq.html#21 http://chemistry.about.com/od/holidaysseasons/a/tiredturkey.htm http://www.snopes.com/food/ingredient/turkey.asp http://en.wikipedia.org/wiki/Tryptophan http://web.mit.edu/newsoffice/2006/thanksgiving.html http://www.webmd.com/food-recipes/features/the-truth-about-tryptophan http://static.howstuffworks.com/gif/trytophan-reaction.gif