This Mulligan Monday can be done on the range or at home. Begin by putting your weight on your left foot and then put your right hand in front of you.
Then take your right arm back and make swings. As you swing down into the ball, your left leg must push the left hip out of the way.
Pushing your left hip back moves your right hip and your shoulders forward, which brings your arm forward.
The key is to feel that overall motion of swinging back with your arm and swinging back to impact. It is important to move your left hip out of the way.
Program this sequence into every swing you make.