Tailwind® Nutrition Endurance Fuel 12 Stick Pack: Make sure the wind in your workout sails never falters by fueling yourself with the Tailwind Nutrition Endurance Fuel. Ditch the gels, chews and pills, and meet all your hydration and electrolyte needs without upsetting your stomach or your taste buds! Just add this all-natural, clean tasting powder to water and it dissolves immediately, providing you with a preservative free and delicious way to get what you need to stay running stronger, longer. Plus, the easy to stow sticks make it even more convenient to simply toss the Endurance Fuel in a bottle or hydration pack, shake and GO!What is Dauwaltermelon? Dauwaltermelon is a watermelon- and lime-flavored endurance sports drink mix created by Tailwind Nutrition in collaboration with elite ultrarunner Courtney Dauwalter.