The kidneys can remove 20–28 liters of water per day, but they cannot excrete more than 0.8 to 1.0 liters per hour. Drinking more than this can be harmful.
Explanation:
The average adult needs between 3-4 litres of water each day but drinking more than 800ml within an hour could be putting your kidneys in danger.
Children are not fully developed. They are still growing and their bodies and minds and not fully ready for some injuries or challenges that face them.