There's no doubt about it: the humble plank is an elite full-body move. It might look easy, but maintaining a perfectly executed plank hold for any length of time earns you legitimate bragging rights, ...

We love going to all sorts of workouts, from barre to boot camps, Pilates to dance cardio, and everything in between. But lately we've been noticing a common thread in ab day across all our classes — ...

The concept of a plank is pretty simple: You hold yourself up in a pushup position for a set period of time to work your core, glutes, and hamstrings—all muscles you need in order to run fast and ...