Lowering from the top
Start at the top of a pull-up and lower yourself as slowly as you can to straight arms.
3 × 3–5
tendon
From just above the shoulder socket, over the top of the ball of the joint and down a groove at the front of the upper arm bone.
Anchors the long head of the biceps across the shoulder.
Loaded by hanging and by bending the elbows, and one of the commoner places for pain at the front of the shoulder.
Start at the top of a pull-up and lower yourself as slowly as you can to straight arms.
3 × 3–5
Other structures the same drills work.
General anatomy, simplified. It describes a structure, not anybody's shoulder, and cannot say what is wrong with yours.