'I can't stress enough the importance of having a trigger to start the downswing. A trigger provides a consistent way to ignite the sequence of movements and unlock the power stored in your right side...

'Muscle memory allows everything...to flow naturally...

'Unlike the pros, most amateurs start the downswing with their shoulders, arms or hands, producing an over-the-top move. By starting down with your lower body, you let the shoulders and arms work from inside the target line, which is a much more powerful move.'

Tiger Woods
Golf Digest
November 2007