
First, sitting at a desk, place a rolled towel underneath your elbow that bothers you.
Then, raise that arm and flex your elbow with your palm facing toward you.
Gently press your elbow into a deep stretch by using the other (good) hand to push on the back of your affected forearm. This will give a good stretch in the back of your upper arm.
Hold the stretch for at least 15 to 30 seconds.
Return to the starting position.
Relax and repeat 2 to 4 times.