alt Hacker NewsThis is an absurd statement. There are many complex undertakings in sport where even the very best get better with practice and can't tell you why. In fact, the ones who think they can tell you why are the one's to be most skeptical of.
You are just making stuff up or regurgitating material from a pop science book.
They can't tell you (not everyone is eloquent), but they sure know why. Struggling to put something in word is not the same as not knowing.