Many people ask “Is the golf swing right-sided or left-sided?”
In actuality, the body is moving in two directions during a swing motion. This includes the backswing (away from the target) and a downswing (toward the target). These two dynamics movements of the body require certain parts of the body to move while other parts stop.
The sequence of the body determines whether parts are actively moving or passively moving.
This video is about how the arms are both active and passive.