I have a rotator cuff problem. I had thought it was impossible to fix, but that is not true.
I read "The 7 Minute Rotator Cuff Solution"... an interesting book; but it is not rated as highly as this one [which I admit I have NOT read this yet].
My shoulder has improved greatly & I have been only doing the "7 Minute" exercises half heartedly. I have a hard time motivating myself.
The "7 Minute" book seems to stir up a lot of controversy, so I look forward to reading Jim Johnson's book.