gut

Medications a person took years ago can still influence the community of microbes living in their gut, according to a large study conducted by the University of Tartu Institute of Genomics.

While human bodies can manufacture these fatty acids, the molecules also are found in dairy products and human breast milk and are made by certain gut microbes.

If this sounds like a good time—because what could be more fun than doing a gut renovation with an extra 10 people around—there are plenty of opportunities to find out.

Their popularity has even gripped Wall Street, where investors and strategists increasingly rely on their odds as a kind of gut check.

But the strange thing is that there’s another significant factor that will determine the outcome this weekend, and this one is the polar opposite of guts and gumption.