We all know that ball speed is directly proportional to club head speed and that distance is a function of ball speed - simple math. But from where does your club head speed originate? Of course, the majority of today's golf instruction would say that clubhead speed comes from the rotation of the body, twisting of the spine, and hence the radical turn of the shoulders (the X-Factor).
We know that clubhead speed comes from arm speed. The faster your arms and the hands that are connected to your golf club move, the faster your club head speed becomes. This is true in more sports than just golf; baseball, tennis, cricket, football, etc.