Tennis elbow and golfers elbow aren't old injuries or something you just need to rest forever. They're tendon load problems. And tendons don't heal from rest they heal from the right kind Tennis elbow, medically known as lateral epicondylitis, is a painful condition caused by overuse of the elbow, particularly from repetitive motions that strain the tendons in the forearm. This They Call It the 'Wolverine Peptide.' And Everyone from Biohackers to Your Dad Wants It Now. Tennis elbow = overloaded tendon, not just inflammation. Recovery should focus on reducing irritation, improving tissue quality, and progressively rebuilding strength so the tendon can handle load again.