Want to sweat like J.Lo? Celeb trainer David Kirsch uses this two-step glider plank variation with his clients. Here's how to complete the move. The glider plank, which moves from the classic stance ...

A safe and productive workout routine is all about balance (we hear crunches pair nicely with Crunch Bars), but a high-intensity regimen is only as effective as it is sustainable. If you love your ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? I'll admit, I sometimes sigh when an instructor cues up a plank. I know, they ...