I sit most of the day eight hours drive home hour...after three my left leg knee ankle swells, some times back of leg sore when I try to stand, sometimes both knees hurt, then in morning back to ok ,until after 3. I notice weekends, its not as bad, but is this some kind of arthritis, as it goes away... Sometimes I take Ibroprohhen , but don t like taking a pill a day.....sometimes I use ben gay to relieve the swell