How long is BAC to zero?
                                
                                
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                                    5 min read                                
                            
                                While many believe that drinking coffee or taking a cold shower can speed up the process, the reality is that your body's average alcohol metabolism rate is a slow and steady process. So, how long is BAC to zero after drinking? The timeline depends on your peak blood alcohol concentration (BAC) and is solely a matter of time.