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

  1. Drink coffee.
  2. Exercise.
  3. Allow your body time to get rid of the alcohol. ✓
  4. Take a cold shower.

Answer: C. Allow your body time to get rid of the alcohol.

The only way to lower your blood alcohol concentration is to give your body time to get rid of the alcohol.

Why this is the answer

The handbook calls cold showers, black coffee, and exercise myths and states plainly that none of them makes a person sober. It says only time can minimize the effects of alcohol, and that time depends on body weight, how many drinks were consumed, and food intake. Since nothing you do speeds the process up, the answer is simply to let your body clear the alcohol on its own.

Why the other answers are wrong

Remember it

If someone suggests coffee, a shower, or a workout to sober up, remember the handbook files all three under myths — only the clock works.

Official handbook: Texas Driver Handbook (DL-7), Chapter 10: Alcohol and Drugs Impact on the Driving Ability , p. 56

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.