To get sober fast, the most important factor is time, as the body metabolizes alcohol at a fixed rate (about one standard drink per hour). However, to help feel more alert and reduce the unpleasant effects faster, one can do the following:

• Hydrate well with water or electrolyte drinks to combat dehydration and help flush out toxins.
• Eat a nutritious meal with carbs, healthy fats, and proteins to slow alcohol absorption and stabilize blood sugar.
• Get some rest or take a short nap to help the body recover.
• Take a cold shower to increase alertness temporarily.
• Engage in light physical activity like a brisk walk to boost circulation.
• Drink moderate caffeine (like coffee) to feel more awake, though it does not lower blood alcohol levels.
• Practice deep breathing to increase oxygen flow and reduce dizziness.

No method can immediately sober someone up; time is the only true cure, but these steps aid recovery and help a person feel better and more presentable sooner.