What are the four physiological curves of the spine?

The physiological curvature of the spine has cervical curvature, thoracic curvature, lumbar curvature and sacral curvature. 1. Cervical curvature and cervical curvature make the head able to rotate flexibly and maintain balance, which helps us observe the surrounding environment and adapt to various movement needs in daily life and work. 2. Chest curve and chest curve backward convex, which is related to the existence of thorax, providing a certain space for important organs such as heart and lung, playing a role in protecting organs. 3. Waist curve and waist curve forward convex, which can buffer the shock generated by walking, running and jumping activities, reduce the pressure on lumbar spine and intervertebral disc, and maintain the stability and balance of the body. 4. Sacral curve backward convex, which adapts to the structure of the pelvis, plays a certain role in supporting and protecting the organs in the pelvis. The physiological curvature of the spine makes the spine like a spring device, increasing the flexibility, elasticity and stability of the spine, which can effectively disperse the pressure on the body, thus better adapting to various postures and activities of the human body. If the physiological curvature of the spine is abnormal, it may lead to spinal diseases, affecting health and quality of life. Therefore, we should pay attention to maintaining correct posture and moderate exercise to maintain the normal physiological curvature of the spine.