Human babies under six months old
demonstrate a reflex adults have to relearn.
What?

Question

Accepted Answer

Swimming — they instinctively hold their breath and paddle when placed in water. — It’s a fetal reflex left over from amniotic-fluid life. Fades by 6 months. Adult swim schools rebuild it painstakingly.

Human babies under six months old demonstrate a reflex adults have to relearn. What?