Plank rotations

Muscles worked

You need

How to do it

1. Start in a push-up position with your hands under your shoulders.
2. Shift your weight onto one hand, peel the other off the floor, and rotate your whole body open into a side plank - feet stacking or staggering as your free arm reaches straight up toward the ceiling.
3. Hold for a moment, rotate back down to the plank, plant the hand, and open to the other side.
4. The body turns as one piece, hips and shoulders together, with no sag in the middle at any point of the turn.