First Principles of Tennis: The Role Of The Arm. Are You A Pusher Or A Puller?

In todays video, "First Principles of Tennis: The Role Of The Arm. Are You A Pusher Or A Puller?", we try to understand the difference between being tight while we swing and being loose. Pushing is the tight version of the way we swing at a tennis ball while pulling becomes more of a loose way to feel our swing. The difference between the two ways is night and day. Can you figure out which one you are?