To do a plank, engage your core and keep a straight line from your head to your heels. Planks strengthen your core, improve balance, and help burn calories. Speak with a healthcare provider before ...

Planks, which have elements of Pilates, yoga, and stretching, require little space. They strengthen your core and help you burn a lot of calories. All planks involve keeping a straight line from 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 ...