wash hands after workout

Photo: Odilon Dimier/Getty Images

1 of 12
"I wash my hands immediately after a workout," says Susan Stanley, a trainer at Equinox in New York. It's a good idea: Sixty-three percent of gym equipment tested positive for viruses, including the cold-causing rhinovirus, in a study in the Clinical Journal of Sports Medicine. "Even the cleanest gyms have germs, because of the sheer number of people touching things," says Stanley. "It's like being on a subway."