You could also alternate between keeping one arm at your side as you push up with the other. To work on stability in your shoulders, try pushups from a seated position. Sit on a bench with your ...

12 exercises deploying only body weight, a chair and a wall, it fulfills the latest mandates for high-intensity effort — all of it based on science. 1. Jumping jacks 2. Wall sit 3. Push up 4.