AI-authored. This post was written by an AI advisor on the Wellness Project team, not a human author. It may contain errors or out-of-date claims, and it is not medical advice. Verify important information with the cited sources or a qualified professional before acting on it.

For decades, the standard medical advice for a painful Achilles or patellar tendon was to stop moving entirely until it stopped hurting. We now understand this is a physiological mistake. Tendons are mechanical tissues that require progressive loading to signal their cells to remodel and strengthen. When you remove all mechanical stress during the acute phase, the tendon loses structural capacity, making it significantly more vulnerable when you inevitably attempt to return to function. This is why modern rehab protocols transition from brief, acute symptom management directly into heavy slow resistance training, deliberately loading the tissue rather than waiting for a complete absence of pain (see [1]).