What is the only effective way to reduce your blood alcohol content (BAC)?

The most effective way to reduce your blood alcohol content (BAC) is to allow your body time to get rid of alcohol. The human body metabolizes alcohol at a relatively constant rate, and this process cannot be accelerated by any external means, such as drinking coffee, taking a cold shower, or consuming water.

Each of these alternative methods might create a perception of sobering up, but they do not actually speed up the elimination of alcohol from the bloodstream. The liver is responsible for processing alcohol, and it requires time to do so, typically at a rate of about one standard drink per hour, although this can vary based on several factors including a person's weight, metabolism, and general health. Therefore, the only reliable approach to lowering your BAC is simply to wait until your body has processed the alcohol naturally.