Most gyms have an elliptical machine, otherwise known as a cross trainer. And chances are, someone's on it—and using it incorrectly. Sounds good, right? Ahead, fitness experts weigh in on everything ...
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Most gyms have an elliptical machine. And chances are, someone's on it—and using it incorrectly. The ...