I can't tell you why a particular athlete would leave a certain coach, but I can tell you there could be many reasons. They could have personality conflicts. They could have misunderstandings. Lots of stuff can happen.
Alberto SalazarI didn't give myself enough breaks during the training year to recover. I didn't understand the power of periodization.
Alberto SalazarAn athlete who tells you the training is always easy and always fun simply hasn't been there. Goals can be elusive which makes the difficult journey all the more rewarding.
Alberto Salazar