Abstract: A golfer swings an elongated implement which emits light from each end thereof. An upstanding frame provides a support for sensor/alarm units which are responsive to the light emitted from each end of the implement. The golf swing training apparatus serves to train a golfer's muscles to repeatedly perform the precise motion that has been proven over the years to be the technically correct swing motion required to excel at the sport of golf. The present invention permits the user to practice the golf swing motion slowly, stopping and holding the motion at each of several discrete, sequential positions of club alignment, thus imparting memory of the complete swing motion to the muscles involved in performing the swing motion.