There is a lot of proof to this. I am an zealous hockey fan, and a lot of the best players in the NHL still use many of the drills they learned as kids. It's no

There is a lot of proof to this. I am an zealous hockey fan, and a lot of the best players in the NHL still use many of the drills they learned as kids. It's not that they mastered the fundamentals, it's that they never stopped practicing them, and never will stop practicing them. Of course, they also use more complex practice routines, but they build on the fundamentals not FIFO them.