Look around you and you will notice that most living things have curves. Flowers, fruits, the head of a bird, the underside of a dog – all of these are curved. The belly of a pregnant woman is a large curve; the baby nestled in the womb is curled up in a curved position. And a newborn baby, so accustomed to being curled up in the mother’s womb for 9 months, tends to revert back to the curved position any chance he can.
As the baby grows, we’ve been taught to provide them with tummy time; essentially placing the baby face down so that he can use his little neck muscles to lift up his head and develop the curve in his neck – the cervical curve. As he starts to crawl, he pushes up on all fours and hunches his back, much like a cat does when stretching, which begins to develop the curve in his upper back – the thoracic curve. As a toddler, it’s easy to notice the pot belly stance as he struggles to find his balance and develop the curve in his lower back – the lumbar curve.