Healthy snacks. What you eat and drink directly affects your energy level and decision making on the court. Plan to burn a lot of calories, but stay away from processed snacks with a lot of sugar. These will cause you to crash after the initial burst of energy. Bananas, blueberries, mandarin oranges, nuts, pumpkin seeds, whey protein shakes, blueberries, shelf-stable hummus, beef jerky, dried fruit (without the added sugar), and nut butter packets make great options.