Final answer:
Alcohol impairs coordination, judgment, and the excretory system after two to four drinks, primarily affecting the nervous system and liver.
Step-by-step explanation:
After two to four drinks, alcohol begins to impair your coordination, judgment, and the overall function of your excretory system. Notably, alcohol impacts the nervous system and can lead to visual disturbances, slurred speech, drowsiness, and a loss of coordination. The liver, which is part of the excretory system, plays a crucial role in metabolizing alcohol, but excessive consumption can lead to serious health issues such as liver and kidney disease. The blood alcohol concentration (BAC) is a key factor in determining the extent of impairment, with legal intoxication defined as a BAC of greater than 0.08%. It's essential for individuals to drink in moderation, recognizing that the liver metabolizes alcohol at a rate of about 15 mg/dL per hour, and no amount of coffee or cold showers can expedite this process.