
We’ve done plenty of plank challenges at Tom’s Guide. If there’s a plank variation, one of us has jumped on it for a fitness challenge. But one plank I had yet to conquer was the commando plank, so I added 90 reps to my daily routine for one week only.
I admit, I do love the plank exercise. Whether it’s a weight training session or a bodyweight workout, the plank seems to fit nicely into either. It’s known primarily for its core strengthening abilities but the exercise also targets and builds strength in your shoulders, chest, back, glutes, hamstrings, and quad muscles — basically, your entire body.