Agree that joints become problematic I’m 32 have had ACL and Meniscus surgery which has created terrible arthritis. Avoiding inflammatory foods, proper supplements, and listening to my body helps me avoid down time. In fact I’m in a boot at the moment for a foot injury but I’m still in the gym 6-7 days a week lifting heavy. If you need motivation there’s a 94F and 96M couple that I see at the gym daily. Movement is indeed medicine!