The question arises in mind many times that why do babies cry after birth ?
Here’s a simple explanation of the same.
Before delivery of the infant, he or she (infant) is protected in a warm environment in mother’s womb. Now when it is brought out it experience a total change in the environment. The outside temperature and air stimulates the skin of the infant( proprioceptive impulse).This stimulation makes the child to take a deep breath. As soon as the air gets inside the lungs in the first gasp it result into a cry. After that it repeatedly takes up this deep breathing and establishes the regular respiratory cycle.