Drinking alcoholic beverages high in congeners (compounds in drinks that give them their flavor) puts you at a higher risk for developing a hangover the next day. These drinks are generally darker in color (e.g., dark beers, red wine, bourbons), but excessive consumption of paler alcohols can cause a hangover too. Adding other drugs (like nicotine) to your body will increase the risk of a hangover, as will drinking without eating. A high level of physical activity while drinking and lack of sleep afterwards may contribute to the development or worsening of your hangover. Being ill and having a family history of alcoholism are also risk factors for a hangover after drinking.