It's the best. All the most important life lessons that guide me as an adult were learned in gymnastics.

Our guys start as high school freshmen (~14yo) who can barely do a forward roll and then it's a race against time to see how far they can progress in their four-year high school career. The timing works out well for teenage boys. They almost never catch up to the level of fundamentals that the kids who started young attain, but it's an even playing field in terms of them maturing from boy strength to young man strength.