pain
"I am 73. I could not exercise due to arthritis pain. I was advised to have my knee replaced but was not willing because of many other medical problems. I was fearful of further strain on my body. 

Percocet (5/325) allowed me to return to swimming laps 30-40 minutes a day and to walk 30-40 minutes a day. I only take it before exercising. It is wonderful. My strength has increased and my arthritis is better. My knee has stabilized to some extent."