When Kevin Durant (NBA) scores - he doesn't celebrate. Doesn't even smile. Not taunting anyone. Nothing.
That's because his job is not done.
What he does is touch the number on his shirt at the beginning of every game - 35. The number he chose to commemorate his first coach - the first person he looked up to - who died at 35. That's the reason he is the first one to get back to training the day after the season ended.
That's his why.