
Sit or stand nice and tall.
Pull your shoulder blades down and back.
Keeping your neck straight and relaxed, raise your left arm towards the ceiling, then bend it at your elbow to bring and rest your left palm on your upper back.
Then, raise your right hand. Use it to grab your left elbow, and gently pull your left elbow further toward your center and down. You will feel the stretch along your triceps (i.e., the back of your upper arm).
Hold the stretch for 15 to 30 seconds.
Switch elbows and repeat the entire steps.
Aim for at least 2 sets of 4.