Using the Endurance Fuel is super easy. First, open the bag and pour the fuel into a bottle or your hydration pack. Then, add water and shake well until the fuel is completely dissolved. You can start drinking it right away to get the energy you need. As for precautions, make sure to use clean water. If you have any food allergies, check the ingredients list. To maintain the quality of the fuel, store the bag in a cool and dry place away from direct sunlight. That's it! Enjoy your endurance journey with this great fuel.