1. Prepare everything you need to go - It really helps to pack everything you need to go to the tournament with and leave it somewhere where you will remember it. You won't have to rush around in the morning looking for it and you'll be ready to leave on the spot. 2. Avoid sugar and caffeine - Sugar and caffeine can give you energy, but it will make you crash later. Stick with water and some healthy foods. Try a tuna sandwich instead of that candy bar. Fish is brain food after all. Eat things high in protein for more energy. Pack a snack if you wish. Try a granola bar! 3. Smoking/Hygiene Tips - If you smoke, try to air yourself out before you begin your next match. No one really wants to play a match with someone that smells like an ashtray.