They are wan and under muscled too. We went outside and played.
They do have impressive digital, particularly thumb musculature.
Boomers Rule
I would say that for the kids some are bigger than average and some are smaller than average— but I noticed kids 13 and up can grow a full beard. That’s something that was impossible for me to do when I was a kid in the 70s and 80s. And I think the rapid brain aging contributes to the hyper aggression