Self-care is one of the most important and consistent aspects of every champion, across every sport. No matter what sport you love, your favorite athlete takes care of themselves almost more than they take care of the equipment they use. And they engage in self-care longer than the time they spend preparing for their game.
I was at my first state-level competition in high school. All of us athletes there had won our regionals. Every single kid was a top wrestler in the state of Minnesota, then some won, and some lost.