Either hunger or sleep.
Get to know the activation systems in the competition.
Learn to be alert, always.
The decrease in neurovegetative activity leads to a change in the functioning of the organism during competition. Know the strategies, to achieve optimal performance. Your brain is waiting for you to collaborate with its natural inclination for movement.
You existe to move. feed yourself..
Competitive hunger is related to a state of stimulation called arousal. What you need to learn is that a significant part of this ideal performance condition depends on you. Use strategies to get to the 'optimal performance zone'. Remember that the stimuli you provide your brain will be its alliance, with you, in performance.