• Holding med ball in front, place left foot on box and drive through box explosively
• As you reach full extension with left leg, drive right knee up and press med ball overhead
• Return to start; repeat on opposite side
• Continue in alternating fashion

Coaching points: Use box height that brings knee to 90-degree angle when foot is on it // Keep head up and core tight
Goodstein: [This] works on separation of the hips, which helps with overall speed.