Do you mean in the Escort world or universally? I don' t think being young means 'athletic' Many girls leave school over weight these days. Tighter skin, well yup maybe.
Skills? There are some young women that are early developers, as there are guys, but for me, I was a late developer, although now I do know my body well, so I got there in the end, but I can't say that at the age of 30 I was better skilled than a young lady of 24, as it would have been a lie.
I thought you .meant women in general,
but if we are talking escorts......I read or heard somewhere recently that ideal escorts ages are in the range 25 to 35.
I kinda agree with this while adding the caveat, that many excellent escorts will be above or below this age range.
I have met a couple of inexperienced younger women who had chosen a life that didn't suit them and a few older who appeared a bit jaded , perhaps a little disappointed they were still working.
Sorry I meant escorts. I've seen under 30's and tbh, not as good as those over 30