1. Dirty Seats
Seventy percent of the chair seats Leamy tested had bad bacteria on them -- 17 different kinds, including strains of E. coli. Why? All customers sit on them, and most restaurants don't think to sanitize them.
So what can you do? For starters, Leamy advised, the next time you go to a restaurant, take a seat, order your food -- then go wash your hands before you eat.