Your favorite ab-building machine at the gym may be causing you more harm than good. That's right—we're talking about the torso rotation machine. This is the Chubby Checker–inspired ab machine you sit ...

Try these four daily walking variations to engage your core, improve posture, and help flatten your stomach after 50.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? That said, different ab machines function in very different ways, so it's ...

Practical core training after 45 thrives on movements that challenge your entire body at once. Standing exercises do this better than machines because they force your core to stabilize against gravity ...