Impact Position: Keep Your Head Back
When you look at PGA Tour players, none of them keep their head dead still during the golf swing. So don't try to keep your head still.
But there is one rule to that. Your head can move a bit, but don't move it forward until after impact.
If your head moves forward, you won't be able to transmit your power to the ball. Take a look at the home run hitter, his head stays behind the ball but never move forward.
Lee Trevino's Advice
When your head moves forward during the downswing, your whole swing plane moves ahead. That means you will tend to lose the ball to the right or leave the clubface open through impact.
One day, Lee Trevino was playing with the amateur golfer. Trevino gave only one advice to this golfer. He told him to keep his head back.
This amateur golfer was hitting a strong draw on that day.
How to Keep Your Head back
Let me show you some drills to keep your head back.
1. Limit your follow through
I know a golfer who was trying to copy pros' finish position. But he tried too hard that he was rushing the downswing. As a result, he was moving his head forward.
So I asked him to limit his follow through and keep his eyes on the ball through impact.
Try to stop your follow through after impact. And focus on the sound at impact. This should help you keep your head back.
2. Lift your left heel
At address, lift your left heel. Take a few practice swings with your left heel off the ground during the whole swing.
This will prevent your upper body to move forward on the downswing.
If you stop your head from moving forward, your clubhead speed will increase.