A golf swing training device comprising a base adapted for support by the ground and a vertical pole connected to and extending vertically from the base to accommodate the height of a golfer. A reminder seat is connected to the vertical pole to accommodate the golfer's posterior resting against the seat during a golf swing and facing away from the vertical pole. An elastic band is secured to the vertical pole at a distance above the reminder seat forming a loop around the golfer's chest. The elastic band enables the golfer's abdominal and core muscles to keep flexion throughout the golf swing, thereby allowing a free swinging motion of the golfer while limiting lateral and vertical movement of the body.