For example, some people may find that a six-pack of beer is necessary to achieve the same feeling they once attained from drinking two or three beers. Physical dependence is characterized by increased tolerance, which requires greater doses of the drug in order to achieve the same effect. When a person is physically dependent on alcohol, withdrawal symptoms appear if the drug is discontinued. Although people have attempted to sober up by drinking hot coffee, taking a cold shower or exercising, the actual oxidation rate of alcohol remains unaffected. So far, the FDA has not approved any commercial product that can help people sober up more quickly.
Passage of time is the only remedy.
At a BAC of .02 percent to .03 percent, people often feel very loose or relaxed. At a BAC of .04 percent to .05 percent, judgement, speech and motor coordination are definitely affected. With a BAC of .08 percent to .10 percent, reflexes and judgement are clearly impaired. Blood Alcohol Concentrations of .2 percent could result in unconsciousness, .3 percent could result in a coma, and a level of .4 percent to .5 percent could cause death through the suppression of the brain's breathing center, the cerebellum. Reflexes and judgement are clearly impaired.