More than 1.23 billion chicken wings will be devoured as football fans watch the San Francisco 49ers take on the Baltimore Ravens in the Super Bowl. That’s down about 12 million wings compared to last year. Good news for chickens and the 79 percent of Americans who eat chicken wings. Just five wings have more calories, fat, and cholesterol than a Big Mac. Sickening, but more nauseating: Most chicken products people eat are tainted with feces.

Nearly half of the chicken marketed by national brands and sold in supermarkets is contaminated with feces, according to a study we conducted last year. But Super Bowl fans aren’t the only feces-eaters we’re warning. The 20,000 people attending Wing Bowl in Philadelphia this Friday shouldn’t pooh-pooh our feces findings. Last year’s winner, Takeru Kobayashi, ate 337 chicken wings.

Feces aren’t the only danger in this gluttonous competitive eating contest. Take a look—if you can stomach it—as Kobayashi ingests an estimated 40,162 calories (half of which are fat), 2,221 grams fat, 9,570 milligrams of cholesterol, and 55,783 milligrams of sodium:

A better way to enjoy this Super Bowl weekend: Leave the birds and competition on the Superdome field.