"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." As soon as you step foot into the cardio room, you must make a tough decision: whether to snag a trusty ...

Stair-climbing machines like the StairMaster can provide an effective cardio workout. No matter which machine you choose, youre going to primarily work your lower body. Not only can walking strengthen ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? As soon as you step foot into the cardio room, you must make a tough decision: ...