These are just my own notes for reaching Peak Competitive Potential.
Long Term Development
Do daily tsumego
Get regular exercise
Eat healthy
Short Term Preparation
Eat well
Sleep well
Clip fingernails
Take vitamins
Caffeinate
Stretch
Drink water
Minimize distractions
Put on clean socks
Set medium time controls
Closing comment: Preparing all of the above is not required for playing Ranked games. Just do a little and play, play, play. Just play! Do it! It’s go! Yay!
Yes, basically this. Not being stressed enables both ability to focus on things I study and performance in games (I think but have no real way of proving…)
I would say not being stressed, especially over previous losing games is pretty important, and keep one’s mind calm between games.
I participated in some local tournaments last year with Swiss round-robin, and we had to play 6 games in one day, and every game had to be finished in about 50 minutes. In one of them I lost the first game, then I kept rethinking what I played wrong, and led me to lose the following games for the morning. Only in the afternoon, I had rest and clear my mind, I was able to win the reminding games (although already too late to get any prize though)