As probably all of you know, the human body requires (depending on the environment, the intensity of physical activity, etc.) around two liters of water daily to be able to function correctly. For most, that isn’t new information, yet still many people struggle to reach that minimal level of hydration throughout the day. Achieving a proper hydration level stays an important problem since the beginning of times, even though technology went far ahead in all fields concerned - on the battlefields, tourism, sports, and everyday life.