As a life time walker, I have no need to go to a gym,take 2-3 walks every day
I go out every day{weather permitting} on early morning walk before breakfast just to get me motivated,breathe in fresh air As I've gotten older, I have arthritis in both knees,but it doesn';t stop me from going outside. I've had a partial right knee since 2004, have condition of calcium crystals get between cartiledge, it makes my knee stiff/ sore can't sit for long periods of time When it really bothers me I take Aleve at night