You’ve just gone a period of six to eight hours (if you are lucky) sleeping. During that time, you have not had anything to eat or drink. Your body needs hydration at this point. Drinking water first thing in the morning will kick start your day and give you lasting energy all day long. Early-morning water consumption also boosts your metabolism, making it easier to lose weight and helps prevent a myriad of conditions from kidney stones, to the flue to headaches.