Track athletes will recognize this exercise as no more than the high knee drill, which is not accurate once we look at the specifics of the technique.

• Focus on one leg, drive knee up to hip height (this is important) while driving the same side elbow back
• Return foot same start position (this is also important) and bring elbow forward*
• Repeat on the same side for 10-20 or even 30 repetitions and then repeat on the side