I don't think you change from the time you're 16 until you die. Maybe your body changes, and you have different experiences, but I think you become a fully conscious soul with full abilities. Souls are eternal, and if you keep your marbles until you croak in your 90s or your 100s, you're the same.
I always said, 'Whenever I get pregnant, I'm going to embrace all of the body changes that happen.' My focus has not been on any sort of snap-back or anything like that, because your body won't be the same after giving birth, and if anything, that's something to be celebrated, embraced, and owned.
Every shot feels like the first shot of the day. If I'm on the range hitting shot after shot, I can hit them just as good as I did when I was 30. But out on the course, your body changes between shots. You get out of the cart, and you've got this 170-yard 5-iron over a bunker, and it goes about 138. Lee Trevino