Similar experience for me. I found that many of my aches and pains as I get older are resolved by exercise and stretching. For example, I hurt my lower back in

Similar experience for me. I found that many of my aches and pains as I get older are resolved by exercise and stretching. For example, I hurt my lower back in my 20s. Not extremely bad, but bad enough that it still gets sore if my back gets too weak after 20 years. I stretch and strengthen it without using weights, and it eventually gets better. I stopped running for a decade then decided to pick it back up. My knees were sore or hurt mildly initially, but eventually they got strong enough that they got better. Running is also great for strengthening the lower back.