Sit at a table with your sore forearm resting on it, palm up, and your wrist straight. Hold a soft sponge or a rolled-up sock in your hand. Squeeze gently, using about half of your strength. Hold, then relax slowly.
If an exercise hurts more than you expect, stop and contact your clinician.
Written and reviewed by Konstantinos Danalis, licensed physiotherapist and manual therapist.