Created a lot of professionals too!
besides my parents and grandmother this was the second biggest motivating factor in me being an engineer.
Ran that drill freshmen year in high school and was like.....better hit these books cause I ain't gonna be the next Barry Sanders or Emmit Smith....
When I was a coach I had some kids Pop's email me and ask me why his son didn't play.
I used to run a 6 player variation of this drill. If Pops saw his son run it he would have understood. Kid was 6'6 280lbs and would put his arms straight out to avoid contact.
Definitely too young to be doing that drill
But the big cat drill is one of the GOAT things in sports!