there's such a thingie as memory... eg, when people says practice makes perfect... it means something

eg.. look at boxers, a lot of ppl think to punch is easy but to punch a certain way in d certain speed take muscle memory and u do this by punching over n over at that style u want...

brain memory... by using memory maps and repeating stuff.. it gets burn in ur brain.. eg like swimming styles, knowledge, spelling...

genetic memory... thats how we evolve, eg better looks, better body, better brains, immunity to certain diseases