★★★★★
Ya exercise is the only thing that relieves knee pain for me too. I think it's because you force blood to go the the pain area and that starts the healing process laying on the couch and doing nothing is the worse thing you can do for a weak knee.
Exercise
★★★★★
For me exercise eliminates knee pain. I have also had meniscus issues in one knee for at least 6 years now after a particularly hard training session at my dojo in Los Angeles. I kept walking the dog after the injury, but didn't go back to karate for a good week. I did resume my training after a week and my knee felt better in 3 weeks. Now, oddly, my medial meniscus becomes inflamed only if I stop exercising for more than a week. When it does, I know I need to get back to exercising asap. Overnight the pain and inflammation diminishes to almost nothing. It's very peculiar thing.