What effect do drinking coffee and taking a cold shower have after intoxication?

Drinking coffee and taking a cold shower can indeed make a person feel more alert and awake, but they do not lower blood alcohol content or speed up the process of sober-up. Caffeine, found in coffee, is a stimulant that can temporarily give the feeling of increased alertness. Meanwhile, the shock of a cold shower can also contribute to a heightened sense of awareness. However, neither of these actions effectively change the actual levels of alcohol present in the bloodstream.

The body metabolizes alcohol at its own pace, typically dependent on factors such as weight, age, and liver function. Thus, while someone may feel more awake and alert after these activities, their blood alcohol concentration remains unchanged, and they remain impaired. This is a common misconception, leading individuals to think that these methods can help them sobers up, which is not true.