Mountain Climbers
In a plank, drive the knees to the chest in turn at a fast pace.
How to do it
Setup
High plank, hands under the shoulders, body one line.
Steps
- Drive one knee toward the chest.
- Switch legs in the air, hips level.
- Keep the rhythm without lifting the hips.
Common mistakes
Hips piking up: the abs unload; keep the plank line. Bouncing on the toes: the knees travel, not the hips. Hands drifting forward: keep them under the shoulders.
Breathing
Steady rhythm with the legs; never held.
