Plank Jack

How to do it

1. Set up in a high plank with hands under your shoulders and feet together, core braced and body in a straight line.
2. Keeping your upper body still, jump both feet out wide to the sides.
3. Immediately jump both feet back together to return to the starting plank stance.
4. Keep your hips level throughout each jump so they do not pike up or sag toward the floor.
5. Land softly on the balls of your feet and keep a steady breathing rhythm as you repeat the jumps for the work duration.
6. A common fault is letting the hips sway side to side, so keep the core braced and the shoulders stacked over the wrists.

Muscles worked

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