I remember back to when I was 24, visiting an Aunt who was mid-90's. I had to wait for her as she was on a walk on the beach; a former competitive athlete, she had always been in shape. When she came in, we were talking about stuff and she mentioned 'You know, I don't feel old. I feel like I'm 25. It's only the world that seems me at 95". That stuck; I had always assumed older people felt older.
Now myself, I'm not 95, though i am starting to get on a bit. I still feel young; but lately I'm also feeling my age too. I little harder to spring up from the floor; a little harder to lose the winter fat.
But when I ride; yeah.. I'm 25.