This was recommended to me by someone who had used it after surgery. I have an injury for silly weighted jumping jacks plus getting board yanked during duck dive I sizable surf. Was pretty sure I needed surgery after no improvement for several months. Finally met (video) with doctor, told him I had begun th shoulder program from crossover. He recommended finishing it and coming back for imaging if no improvement. Almost done with 3rd week and didn’t expect it, but much improved mobility and less pain. I am now pretty sure I don’t
Need surgery.