Then there's the matter of how much alcohol you consumed. If you drank a lot, you might not feel better after one day, and [the hangover] might continue up to 72 hours, according to Dr. Halpern. Many of us forget when we're out drinking that the rate at which we drink determines how drunk and hungover we become, she adds. If you drink at a slow pace, you have time to feel the effects and get rid of them. If you drink fast, you won't have time to adjust to your level of intoxication and will find yourself in a state of acute alcohol poisoning with all the unpleasant symptoms that accompany this condition. Drinking speeds like these can also lead to brain damage and other long-term problems if you exceed safe limits. Of course, it also depends on how much you drink; if you eat something with alcohol in it, such as wine or beer, your body will use that as fuel, so even if you don't drink at a rapid rate, you'll still experience some kind of effect. When you wake up with a headache, dizziness, nausea, and/or fatigue, you've got a problem that needs to be treated. The best way to avoid a hangover is not to drink alcohol in the first place. However, if you do drink, try to limit yourself to one glass of wine, one shot of liquor, or one beer per hour of partying. This will help you avoid overdrinking and will minimize your chances of getting a hangover.