Drill

Instructions

1. 1Lean against a wall with hands supporting your weight.
2. 2Drive one knee up to hip height while the stance leg stays tall and stiff at the ankle.
3. 3Alternate quickly, focusing on knee height, not speed.

What to focus on

Knee driving up to hip height with a dorsiflexed foot.

Common mistake

Low, lazy knee drive that stays below hip height.