The “protective co2 blanket” – Home Brew Forums
The average adult human body produces around an ounce of alcohol a day, as a normal metabolic process (this varies with diet, metabolism, and activity), and processes this as a matter of course.
So in other words, “sober as a judge” is still based on the expectation of having about an ounce of alcohol filter through your body throughout the day. This natural level is also taken into account when they measure BAC.
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p>Apparently, the poster is correct.