Have been experiencing knee pain (both knees) while sitting down for extended periods. Not too painful usually but the longer I sit down without moving the worse it is. Started squatting again and no pain during the exercise, felt really good and don’t think my knees are tracking too far over my toes but the days after they feel noticeably more sore than normal, again more so when sitting down. Pain is at the bottom of the knee cap. When I get moving again there’s some pain but it quickly eases once on my feet. Been around 6 weeks. Had noticed this previously but only on things like flights when there’s pretty much zero movement for a long time and it’s very painful to get moving again. Thinking about it, seemed to get worse after playing tennis on a hard court so the impact may not have helped but it wasn’t great beforehand. Any advice or tips besides ibuprofen for a while?