When I was a Sophomore in HS I coached my little brother's 6th grade football team. Before the first practice we got the registrations of all the kids on the team, and one thing they had to fill out what their height & weight.
One kid's said 6'1", 295.
I didn't believe it. These were 12 year olds.
Showed up to the first practice and there he was...no exaggeration, 6'1", 295.
Could barely move though, was extremely obese and terribly inflexible. It was all he could do to bend over and put his finger on the ground to get in a football stance. And his thighs were so big they would rub together when he would try to run - he essentially couldn't run.
But, he was legit 6'1, 295 at 12 years old.
Anyway, that's my story.