Produce speed from the hands and arms, not the ground
The speaker argues that most clubhead speed comes from the hands and arms rather than from ground force. He notes it is well-documented that a person sitting in a chair can produce 75-80% of their maximum speed, so the ground is not the answer to speed. He says stability is still needed, but he thinks ground force is overemphasized in golf instruction.
Channel: Todd Graves
Watch official source at 0:48