Objective develop key fundamentals while warming up without thinking about it, which allows for better balance, good impact position and proper arm swing. The best drills are when the drill allows your mind to be free and your body naturally performs the correct movement. This drill should be done each time you warm up on the range, or when you have a few spare minutes to swing a club.
Note Rickie Fowler does this drill every day when he warms up.
DRILL DETAILS