Why should you encourage the baby to lie on his stomach? - Walla! health. When a baby is just born, the size of its head is about a quarter of theSize of the whole body.
If you lay a newborn on his. stomach, you will see that he has difficulty lifting his heavy head, and in order to. succeed in the task, he will have to muster all his strength and train every day to achieve. the required skill. Lying on the stomach allows free movement of the head to both sides, both to the right and to the left.