Step 1: Stand straight with feet and legs together, hands on hips. Lunge forward with left foot, then push back to standing.

Step 2: Perform a side lunge by planting left foot out to your left side, then push back to standing.

Step 3: Extend left leg behind you and lower yourself into a reverse lunge, then push back to standing.

Repeat: Perform the drill with right leg; continue alternating legs for 1 minute.

via-Kinetic Sports Rehab-Fremont