Not all gym machines are created equal. In fact, some of them do more harm than good—including the hamstring curl machine. In many cases, machines lock your body into fixed positions that don’t ...

Several exercise machines may exacerbate lower back pain if a person does not use proper form, or if they have pre-existing back conditions. A person can discuss alternatives with a physical therapist ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...