IDK I don't think they are great at predicting who will grow up wide so much as putting them in a situation from a young age that develops a certain type of muscles?

For Sure tho it is funny to see - especially with boys, who get hit MUCH later on average, who is 16-17 and still looks 12. High school is so miserably awkward because you have grown women and elementary school boys IN ONE CLASS ROOM.

I do feel like this show is likely to skew older just because of the physical demands! But yeah, I really want to look it up...