REAR LAT PULLDOWN
Lock the carriage at head height. You should still be able to grasp the bar with outstretched arms.
Grasp the bar, stand so that your body is slightly leaning forward
Pull the bar slowly and smoothly down to your neck.
Bend your head slightly forward so you can bring the bar to your neck. Maintain body tension at all times.
The occasional criticism that this exercise is not good for the shoulder joints is wrong. This exercise is very important precisely because of the somewhat unnatural position of the shoulders. However, it should be done with moderate resistance.