Everyday Habits That Can Make You Sick

Your nail biting

Nail biting is more than just a bad tendency; it can also wreak havoc on your health. In a small Turkish study, 76 percent of nail-biters tested positive for diarrhea- and vomit-causing bacteria like Escherichia coli, compared to just 26.5 percent of non-biters. Doctors say these little habits hurt your health, too.