Answer is BOTH!
Whats the best treatment for creaky, arthritic knees? a) sitting down b) Taking glucosamine supplements, c) doing tai Chi or d) taking shark cartilage pills.
Answer C. Doing Tai Chi.
In controlled experiments, supplements have failed to reliably relieve knee pain, but a 2011 review of multiple studies concluded that it is generally effective at controlling pain and improving physical function.