The amount of water you need to drink daily can vary based on factors such as age, gender, activity level, and climate. The general recommendation for adults is about 8 ounces of 8 cups (approximately 2 liters or half a gallon) a day, often referred to as the "8x8 rule." However, some individuals may require more water, while others may need less.
Ice-cold water is perfectly fine to drink if you enjoy it, but temperature doesn’t significantly affect hydration. The most important thing is to stay adequately hydrated throughout the day, whether your water is cold, room temperature, or warm. Listening to your body’s thirst signals and considering your environment and activity level can help you determine how much water is right for you.