Originally posted by Rupert
You gotta know you are wearing out your body...right?
Cycling and swimming are low impact ... footballers coming back from knee injuries in Australia are advised to take up one or both semi-seriously to keep their weight down and cardio ability up ("use it or lose it") while they recuperate.
Running is definitely something that needs to have its quantity carefully limited ... even people in their 20s can get shin splints, let alone the cartilage wear on older, heavier specimens.
Mind you, to stop osteoporosis (yes, even in males) *some* load bearing exercise like running should be done regularly. An older person doesn't want to break something from a quite routine slip and fall. You're excused, James, your tumble must have been spectacular!