Thanks, cephissus, for the clarification.
I is a dummy when it come to new descriptive pronouns and these 'kids' were definitely muscle ... Maybe not muscle-studs, but definitely "muscle".
Maybe former gymnasts who got interested in bodybuilding, but not the bulky-blunder look.
I gotta research the word "twink" to see how it originated.
And "muscle-bear" too, but I got a good idea because I used to work in Yosemite and got to know a lot of the original real ones.
But I think I told that "Bruno story" earlier.