Please do a full warm up before attempting these!!! For Part 1 (Heavy) we are using a 3 iron, gripping at the bottom of the grip. Get into a tall kneeling position. Swing as fast as you can for 5-6 reps or until you cannot maintain 100% speed. Swing hard in both directions. Notice the sounds in both directions. If there is a distinct difference in the swoosh, the softer sound will mean a power discrepancy compared to the other side. Do these 2x a week, always with at least 2 rest days in between.