"It's challenging your core muscles and shoulder stability, and giving you spinal mobility, as well as glute strength and shoulder mobility," she explains. It's a really nice move in a full-body ...

One of the best ways to blast your core is the oh-so-simple plank. When performing a plank with good form, you’re working your midsection, shoulders, chest, lower back, quads, and glutes. The secret ...

When performing a plank with good form, you’re working your midsection, shoulders, chest, lower back, quads, and glutes. The secret of this powerhouse move is keeping a straight line from your ...

and you know how to do a plank . . . but have you tried plank jacks? This intermediate bodyweight move has likely cropped up in your workouts at some point - and whether you loved or hated it ...

The side tap activates the obliques more, as does having to keep your trunk stable as you move the leg out and back.' But results will only come if you perform the plank with proper form ...