YOU PROBABLY THINK you know how to do a plank. The ab training staple is relatively simple, after all—boiled down to the basics, all you need to do is get down on the ground and hold in place.

A plank is more difficult than it looks. You have to use all of your muscle groups, including your core, abs, arms, back, shoulders, glutes and legs. It’s normal to struggle to do a plank. Many of my ...

The plank is one of the most underrated exercises in bodyweight fitness. Planks for beginners start with the low plank (a.k.a forearm plank) and build up to high plank, side plank, reverse plank and ...

This episode of 'Trainer of the Month Club' features a series of planks core exercises with Simone de la Rue that is done with bodyweight. In theory, it’s easy to be a stickler about your exercise ...

Gigi Hadid is obviously in shape. The top model displays her physique and physical prowess frequently in the public eye and few of her fans seem to complain. Still, despite the fact she’s worth $13 ...

‘In your 20s and 30s, being able to plank for 45-60 seconds is a solid marker of good core endurance,’ says PT Joseph Webb, ...

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Poor form can make planks less effective and slow your progress toward your strength training goals. To add insult to injury, doing planks incorrectly can lead to an actual injury. Let's avoid that.