Ok, so I'm certain now that I should be doing more for my rotator cuffs, but how much and on what axis? I've heard that there are 4 rotator movements, but thinking about it there must be at least six. Assuming that they're all performed with a ninety degree bend at the elbow there are two (clockwise and counterclockwise rotation) for each axis (x, y, and z). One pair with your arm at your side for the y axis, one pair with your arms out to your side (x axis) and one pair with your arm out in front of you. Do I need to work all of these?