Mountain Climbers

Running the knees toward the chest from a push-up position — core stability under fast limb movement, plus a conditioning hit.

Setup

Strong push-up position — hands under shoulders, body a straight line.

How to do it

1. Drive one knee toward the chest, then switch legs in a running rhythm.
2. The hips stay LOW and level — the plank must not break.
3. Shoulders stay stacked over the hands.
4. Land softly on the balls of the feet.

Common mistakes

• Hips piking up as fatigue builds.
• Bouncing the whole body instead of switching the legs.
• Hands drifting forward of the shoulders.

Scale it

Easier: Slow the tempo, or elevate the hands on a bench.

Harder: Faster switches, or cross-body knees toward the opposite elbow.

Pairs well with