Flexibility is extremely important to producing distance because you can't hit the ball far if you don't make a full swing, the Speed Stick is a great product to increase your flexibility and can be used anywhere
A correct angle in your knees, hips and shoulders at address influences your swing plane
The angle that the club travels around your spine is called your swing plane. A good swing plane gives you the best chance to hit straight shots by returning the club square to the ball at impact.