Mindwise I feel about 40. 40 was pretty good so feeling 40 is fine.
Unfortunately, my body is 73, and feels pretty close to that age. Nothing works quite like it should. I have had 4 back operations, gall bladder removed, section cut out of my intestine, wear bifocals, and have three none repaired hernias.
I can still ski and as long as medical science stays ahead my problems I should be ok. Lol.