What is the only method that can effectively lower a person's BAC?

The only method that can effectively lower a person's Blood Alcohol Concentration (BAC) is time. When a person consumes alcohol, it is metabolized by the liver at a relatively constant rate, typically about 0.015% BAC per hour for an average adult. This rate can vary based on individual factors such as weight, gender, and overall health, but essentially, the body needs time to metabolize the alcohol fully.

Other methods that people might believe lower BAC, such as drinking coffee, exercising, or getting fresh air, do not actually speed up the metabolism of alcohol. While they may help a person feel more alert or diminish the effects of intoxication, they do not affect the blood alcohol level in any meaningful way. Only time will lead to a decrease in BAC, as the liver continues to work at its natural pace, processing the alcohol from the bloodstream. Therefore, waiting is the key to achieving a safer BAC level.