This document discusses several common myths about drinking water and provides facts to debunk them. Myth 1 is that everyone needs 8 glasses of water per day, but your water needs vary based on factors like height, weight, and age. Myth 2 is that rain water is safe to drink directly, but it needs to be boiled and filtered first due to pollution. Myth 3 is that sports drinks are better than water for athletic performance, but water meets the needs of most casual athletes. Myth 4 is that drinking cold water after eating is not cancerous, but it can solidify foods and slow digestion, potentially leading to health issues over time.