I just did my rotator cuff strengthening exercises, and decided to try doing all of them with the green band, which has more resistance. This after doing 30 or so of the two I'd been doing with that band the longest, the row-style and the one that the PT described as "like you were going to punch someone." The sideways toward my stomach, I did 30. Sideways away from my body, 21. And the up-and-across that the PT described as being most like what we actually use shoulders for, 20. I suspect that, with a different ordering, I might have done 30 of that, and fewer of another.
(Twenty is my benchmark because it's how many repetitions of related exercises the physical therapists usually have me do in the office, for whichever subset of the exercises any given PT does on any given visit.)
(Twenty is my benchmark because it's how many repetitions of related exercises the physical therapists usually have me do in the office, for whichever subset of the exercises any given PT does on any given visit.)