Commercial Driver License (CDL) Class B Practice Test

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Study for the Commercial Driver License (CDL) Class B Test. Study using multiple-choice questions, hints, and explanations. Prepare for your exam effectively!

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Is it true that coffee and fresh air can help a person sober up?

True
False
It depends on the amount of alcohol consumed
Only fresh air helps

The correct answer is: False

The assertion that coffee and fresh air can help a person sober up is false. While many people believe that drinking coffee can counteract the effects of alcohol, it is important to understand that caffeine does not speed up the metabolism of alcohol in the body. Alcohol is processed by the liver, and no external stimulant can change that rate; therefore, a person remains intoxicated until their body has thoroughly metabolized the alcohol they consumed. Similarly, while fresh air can sometimes make a person feel more alert or awake, it does not affect the level of alcohol in their system or reduce impairment. The sober-up process relies solely on time for the body to clear alcohol from the bloodstream, rather than any tricks like consuming coffee or getting fresh air. Thus, saying that coffee and fresh air can effectively sober someone up is a misconception, making it clear why this statement is indeed false.