The problem is that on the day of a major competition, I have really bad indigestion. Besides being annoying, disgusting, and a little embarrassing, this interrupts my competition and adds unneeded stress. For some, this leads to stomach discomfort, diarrhea, or constipation.
Rehearsal imagery is a technique widely used by athletes and performance artists.
When your long list is finished, close your eyes and visualize each of these factors in your mind's eye. Imagine in great detail your actual movements, and how your body will feel as you proceed in your glorious performance. Think of yourself sprinting around the track, following the ball from your hand into the hoop, delivering a slice serve to a specific spot on your opponent's court, passing other bikers, and pacing yourself up and down hills. Stress is generated by fear of the unknown, and by new demands and challenges. By imagining that you are really there, even if the actual details are unknown to you, you are familiarizing yourself with what might be, as well as how you see yourself in that situation.