push one hand into pillow in quadruped position while rounding shoulders to protract scapula, alternating between push and release
Get down on hands and knee position i.e on 4 points ( both hands and both knees), hands under the shoulder and knees under the hip. Place a pillow under the hands, lift one hand off the floor and rest on back and push the hand on the pillow towards the floor rounding the shoulders, release the push to back to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
