Is all very well talking about a healthy diet/exercise and a positive attitude to life etc as we get older but life is a lottery, my DH was playing football, running, and hill walking in his seventies, kept his mind agile playing chess and ate very healthily, never smoked, never drank, then had a massive stroke. Now he is a shadow of his former self and can only do something if I help him with it, and sometimes can’t do it then either.
If you are older and healthy enough to enjoy life fully do it as much as you can for as long as you can, it really is later than you think.