I played a lot of baseball growing up, and I always hit better if I kept moving before the pitch instead of standing still in the batter's box. I think a waggle does the same thing in the golf swing. It keeps you relaxed and gets your body ready to hit the ball.
Any film you make is a crap shoot.
There is an ever-widening gap between what science allows and what we should actually do. There are many doors science can open that should be kept closed, on prudential or ethical grounds.
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