The Time-Standing-Still Belly Board

Trail Log · Movement Breakdown

Folks, I present to you the plank — the exercise that looks like absolutely nothing is happening while simultaneously everything is happening. You get into a face-down position on the floor, prop yourself up on your forearms and toes, and then... you just stay there. That's it. That's the whole exercise. You're human furniture. A very tense, very determined piece of furniture.

But here's what's going on beneath the surface: your abdominal muscles are contracting like they're trying to crush a diamond. Your lower back is working to keep your spine from sagging like a hammock. Your shoulders are burning from holding your upper body off the ground. Your glutes are squeezing to maintain a straight line from head to heels. And all of this is happening while you appear to be doing nothing more ambitious than lying on the floor in a slightly elevated position. It's the fitness equivalent of a duck on a pond — calm above water, paddling furiously below.

The key is keeping your body in one straight line from the top of your head to your ankles. No sagging hips, no hiking your rear end toward the ceiling, no bizarre swaying. Just a rigid, unbroken plank. Hold it as long as you can, and when you start shaking like a leaf in a windstorm, you'll know it's working. For extra credit, you can lift one arm or one leg, which adds a stability challenge that makes your core even more frantic. The plank is simple, brutal, and effective — the holy trinity of exercise design.