This article is from Dr. Nitish Mandal, Consultant Pain Physician in Bangalore, with clinics in Koramangala and J.P. Nagar.
Three background points
Local inflammation after injury causes protective pain, but repeated inflammation can change nerves and tissues. Pain does not adapt away like other senses. The nervous system can become more sensitive over time. Supporting tissues lose strength if they are not used.
Rule 1
Avoid everything that causes or increases your pain. Examples given include computer work that increases wrist pain, walking that increases hip, knee, or ankle pain, and racquet sports that increase shoulder or elbow pain.
Rule 2
Absolute rest for weeks to months can weaken muscles and tendons. Move in ways that are not painful. Exercise other parts of the body, and strengthen the painful part using angles or resistance that do not provoke pain.