We should drink the water after we b---- it

Of all the things we eat and drink,water is the most important.Not many people realize this but it is quite
true.The human (人类的) body goes without food for a long time,but two or three days without water usually
results in death.
Many people do not understand how much water the human body needs to work properly and many people
do not drink enough,especially in hot weather.Most people drink when they are thirsty,but we often need
more water,especially if we have been taking exercise.
A man's body is 65 to 75 percent of water.Most people need about five to seven liters of water every day,
but we do not need to drink this amount (数量) because a lot comes from the food we eat.Or we do not have
enough water,we feel thirsty and may become ill.Do you know what the best drink is?Yes,cold water.

boiled，句意应为我们应该在水烧开后饮用。