Vocal science from 1980s still true now: at 15:00, Serious violent physical action like trying to lift piano, we have to grunt like "Huh!" cuz need to close the vocal folds, to stabilize the breath pressure in lungs, which gives shoulder & back muscles a firm base to work against. Laryngectomy means no vocal fold closure, & u have to retrain other muscles to take over that function. https://www.youtube.com/watch?v=8VpgvqN-53o