When we think about children’s health, we often focus on nutrition, posture, and exercise—but few parents realize that one of the most powerful indicators of their child’s brain and body development lies in their neck. Specifically, the cervical curve—the gentle C-shaped arc in the neck—is vital for healthy growth, optimal brain function, and proper circulation of the body’s most precious fluids.

Insulin sensitivity means your body responds well to insulin and can easily move sugar into your cells for energy. When you lose that...