An infant placed face down in a pool of water will begin to paddle and kick in a swimming motion. The reflex disappears between 4–6 months. Its survival function is to help the child stay alive if it is drowning so a caregiver has more time to save it. Although the infant will begin to paddle and kick, placing them in water is very risky. They swallow a large amount of water at the same time. It is advisable to postpone swimming lessons in infants until they are at least three years old.