What starts the downswing in golf?

The golf swing is an athletic movement and, as such, you need poise and fluidity. To help achieve this, place an alignment stick or shaft square to your target, in line with your left heel, then rotate to the top of your backswing.  Now, trigger your downswing by moving your left knee over your left foot. Ideally, the knee, hip and shoulder are going to appear almost in a line before your left arm drops too far below shoulder height.  This stabilises the weight shift and produces a powerful move as the left arm and shaft are delayed, so creating a ‘later hit’ effect.

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