SHOULDER PRESS BEHIND THE HEAD
Position the carriage so that the handle bar is at the level of the neck.
Stand firmly with the feet shoulder-width and keep a straight back. Grip the handle bar far out.
Press the bar upwards with even pressure until the arms are fully extended. Then return slowly to the starting position. Before you reach the lower stop, press back up again.
Important: ensure your posture is always stable and straight. Do not let your back arch. Maintain the tension of the muscles of your torso.
The occasional criticism that this exercise is not good for the shoulder joints is not entirely correct. This exercise is very important precisely because of the somewhat unnatural position of the shoulders. However, it should be done with moderate resistance.