Gatorade G2 Raspberry Melon -- 32 oz., 6 pk. Get the electrolytes you need to perform but with only 20 calories per 8-ounce serving. That"s less than half the calories/energy in Original Gatorade. Part of G Series as 02 Perform, this low-calorie thirst-quencher is designed to deliver hydration to athletes during lighter competition and exercise. Rehydrate and replenish with a unique balance of carbohydrates, sodium and potassium.