1) The document discusses pain physiology and why we experience both acute and chronic pain. It explains that pain serves an important protective function but can persist even after an injury has healed.
2) When an injury occurs, inflammation causes swelling and sensitizes nerves to detect harmful stimuli. Chronic pain develops when nerves and tissues become highly sensitized over long periods of time.
3) Managing chronic pain involves understanding its causes, staying active, addressing mental health, avoiding overexertion, and setting new goals rather than focusing on eliminating pain completely. Treatment options like physiotherapy and exercise programs can help coping strategies.