People are frequently curious to know if coffee is a good thing to have to help one sober up after excessive drinking. As we see, people are always offered coffee at the end of an evening. They often have coffee stations, you see that on New Year's Eve. There's free coffee at rest stops. In fact, coffee does not help you sober up. What helps one sober up is time after drinking and water. Coffee will make one feel more alert because of the caffeine, but that doesn't mean that you're actually more sober. In fact, that can lull you into a state of complacency to think you're more sober because you're more alert. However, you're not more sober. In fact, the danger of drinking coffee after drinking is that coffee also can be dehydrating. So the best thing to do to sober up is to give yourself time and during that time hydrate your body with water.