"Pain is your body's way of warning you and always listen."

True dat. Keep flogging an aching knee and eventually you'll break it (osteoarthritis). Replacements don't work nearly as well and last only ~10 years. You don't have to "pound" a knee to damage it (I am repeating myself here, but this is important) - it's the presence of inflammation, the pain and swelling, that's actually tearing up your joint space.

BK