Wall push-ups are a great exercise for working several shoulder muscles at once without putting too much pressure on them.

The horizontal ab squat is a core exercise that strengthens your lower abs and hip flexors without weights while remaining low impact on your joints. Take your humble bodyweight squat, flip it on ...

Horizontal Abduction “T”: This also works your shoulders. Grab a resistance band and hold it with an underhand grip with your thumbs out and pull it backward. Do 3 sets of 15.