If you’ve ever tried them, you know side planks are challenging­—even more than regular planks. But they’re a critical move, says Keli Roberts, an exercise physiologist with the American College of ...

Fitness fads may come and go, but there’s one aspect of strength training we can all agree on: a strong core never goes out of style - and for this, I'd recommend the side plank exercise every time.

PLANKS ARE ABOUT as straightforward as an exercise gets. You brace your core, squeeze your glutes, and hold your position for as long as you can maintain tension (which might be much shorter than you ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images The plank is, after a short time, a pretty boring move. It's hugely ...