I have spent about 6 weeks in hospital over the years from varying accidents , worst I had was a suspected fractured pelvis , and that was after falling off a terraced house roof , it’s very strange waking up in hospital with lots of people looking down at you ! ,
I was lucky , the ones looking down were the Angels of the NHS and not Winged Ones !!
about age , fitness strength and muscle loss , I saw a National Geographic production in the 90’s , it was very informative and there was a human experiment which concluded that it is possible to regenerate and retain muscle mass in our later years , from memory it was highlighting improving independence and quality of life after 70 and a continuance of such ,