I am 57 and I can tell the weather by how my knees feel and I fractured an ankle in college trying to get ready for Air Force Field Training. Never really healed correctly as I stupidly tried to hide it from the detachment staff and had the cast removed early for a meeting. Doing everything I can these days to get my weight down as I feel my best at about 165-175, I have a way to go to get back there This is how I solve the "old bones" problem. The "bone" rides really close to the ground and even with my "Dad" physique, I can get under the Prius without having to lift it too high. Little helper is 22 now and in college so he doesn't "help" much with the cars anymore. Great kid, cars just aren't his thing.