You still feel the same as when you are in your twenties. In fact in answer to the the question "How old do you feel?" I always feel like I'm about 22. However

You still feel the same as when you are in your twenties. In fact in answer to the the question "How old do you feel?" I always feel like I'm about 22. However ..... for some reason you can't do as much. Some jobs that you could do all day once upon a time now leave you exhausted after an hour or so. Those hills seem steeper than they look. That package is heavier than you thought it was. I suppose I'm trying to say that your body hasn't maintained the same youthfulness as your head has.