If you're able to do it Chas, do it. Don't forget that some of those you see "Sitting around waiting to die" would much rather be doing something were it it not for their poor fortune healthwise.

Up until a few months ago we had a roadie, 85 years young, then osteoarthritis took such a vicious swing at him from out of nowhere that he's now barely able to walk.

Count yourself lucky that you still have the mobility to do things and just do it.