To use this single - serve sports hydration drink mix, simply add one scoop to 12 to 16 fluid ounces (350 to 500 ml) of water and shake well. As a general start, drink 1 - 2 servings per hour of exercise, but always listen to your body's thirst signals. Use it when you're sweating and drink only when you're thirsty; don't drink it if you're not. There's no special maintenance required for this drink mix, just keep it in a cool, dry place.