Final answer:
The statement is false; the only effective way to sober up after drinking alcohol is to allow the liver enough time to metabolize the alcohol. Caffeinated coffee and brisk walks do not expedite this process.
Step-by-step explanation:
The belief that drinking lots of caffeinated coffee and taking brisk walks is an effective way to sober up after drinking alcohol is false. When it comes to alcohol metabolism, the only way to reduce alcohol toxicity and achieve sobriety is by giving your liver ample time to metabolize the ingested alcohol.
No amount of coffee, showers, or exercise can speed up this process. For a legally intoxicated person with a BAC of 0.08, it typically takes at least five hours after drinking stops for the body to sober up.
While caffeine is a stimulant found in coffee, tea, and some soft drinks, known to block the activity of adenosine and possibly improve endurance capacity, its actions do not influence the alcohol excretion rate or the liver’s ability to metabolize alcohol more quickly.