Somewhere around the late 1990s, blaming tryptophan consumption for post-Thanksgiving lethargy became as much of a holiday tradition as the food itself. This amino acid — present in turkey meat — is supposed to accumulate in your brain, prompting your body to use it to make extra serotonin, a chemical that can make you feel sleepy.
But, as this RiskBites video and a very excellent article by Matt Shipman both explain, there's actually a simpler explanation for the sleepiness you feel after eating two helpings of turkey, trimmings, and pie. Simply put: You ate too damn much.
Many people gorge themselves at the Thanksgiving table. During the resultant digestive process, the body diverts as much as 50 percent of its blood to the small intestine, to maximize absorption of calories and nutrients. That means there is less blood available for physical activity. Furthermore, most traditional Thanksgiving meals are high in fat and protein content, which actually slows down the digestive process. So your body is going to be diverting blood to the small intestine for a longer period of time.
Unfortunately, pointing this out to the family members sprawled on your living room furniture will not make you sound nearly as clever as the tryptophan myth does. And the bit about the blood flow to the intestine might get you (slowly, sluggishly) lynched. Maybe, instead, you can just recommend a nice walk.
Read the rest of Matt Shipman's piece on tryptophan, including an interaction between mashed potatoes and turkey that could, conceivably, cause tryptophan-induced sleepiness.
Caltech theoretical physicist Sean Carroll, author of Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime, explains the concept of a “dimensions” at five different levels of complexity. Dr. Carroll sure has a big brane.
In 1936, the Tasmanian tiger (Thylacinus cynocephalus) was declared to be extinct. Yet in the last three years, there have been eight reported sightings according to Tasmania’s Department of Primary Industries, Parks, Water and Environment. I hope it’s true. From CNN: While stories abound that some continue to live in the remote wilds of Tasmania, […]
Who doesn’t love a free meal? From Nautilus Live: During the final dive of this year’s Nautilus expedition season, our team discovered a whale fall while exploring Davidson Seamount off central California’s coast with researchers from Monterey Bay National Marine Sanctuary. The skeletal remains of the whale lying on its back are estimated to be […]
We can’t all go through life with just a pair of sneakers and flip-flops. Sometimes, you have to invest in a pair of high-quality dress shoes. However, you’ve probably discovered that high-end footwear almost always comes with eye-popping price tags. You’ve got to compromise on second-hand or just suck it up and take out a […]
We have a theory about those throw blankets that are barely big enough to cover your legs. The only people who seem to make them or use them are grandmothers, and the blankets are only that small because Nana got bored halfway through the sewing job. Look, we’re sure she means well. But if you […]
Remember when the default state of your online presence was anonymity? That’s not so clear-cut anymore, and the worst part is you may not even know who is using your data or what they’re using it for. Small wonder that so many people are choosing to surf through virtual private networks. VPNs filter web access […]