Band pull-apart
Hold a light band at shoulder height with straight arms and pull it apart to your chest.
3 × 12–15
muscle
From the spine of the upper back to the inner edge of the shoulder blade.
Pull the shoulder blade in towards the spine and rotate it downwards.
Finish the pull by drawing the shoulder blades together at the top.
Hold a light band at shoulder height with straight arms and pull it apart to your chest.
3 × 12–15
In a push-up position with straight arms, let the chest sink between the shoulder blades, then push the floor away.
3 × 10–12
Repeat the active hang as reps: shoulders down, pause, back up to a relaxed hang.
3 × 5–10
From a still, straight-arm hang, pull until the chin is over the bar, with no swing.
3 × 1–3
Jump or step to the top of a pull-up and hold there, elbows bent.
3 × 5–15 s
A strict pull-up with a band looped under a knee or foot to take some weight.
3 × 3–6
Other structures the same drills work.
Test your recall: the free shoulder anatomy quiz asks about the rhomboids →
Print it: the free pull-up muscles diagram labels the rhomboids →
General anatomy, simplified. It describes a structure, not anybody's shoulder, and cannot say what is wrong with yours.