An issue that I've developed recently is my knee starts to tighten up on me and I have to end my workout early. I tweaked my knee playing basketball a few months back and have recovered almost fully from it now. I've asked my doctor about it and he said its a matter or needing to strengthen up my knee and get it back in working shape. I drink a lot of water, stretch properly, etc to put me in a good position to have good workouts. Is there anything else I can do to help alleviate the stress on my knees?