There are several reasons one can get a headache and what they can do to cure them, quickly and efficiently. The bearer of the headache should ensure that they are effectively hydrated. Drink plenty of water and wait for the headache for dissipate. If that does not work, try eating a small snack complete with vitamins and protein. If one is still experiencing a headache, lay down in a quiet dark room for no more than a half hour. Close your eyes but don't focus only on sleep. Instead just simply try to relax. Even still, if this does not work, take a small dosage of over the counter headache medicine, ensuring yourself a good night sleep.