支撑的艺术：
脊椎力学与深度睡眠The Art of Support:
Spinal Mechanics and Deep Sleep

寻找“零压力”曲线Finding the "Zero-Pressure" Curve

人体脊椎在直立时呈现自然的“S”型曲线，但在平躺时，重力会拉直这一曲线，导致腰椎悬空或颈椎受压。 理想的睡眠支撑系统（Support System）并非越硬越好，而是能在不同睡姿下， 维持脊椎的中立位排列，即耳、肩、髋在一条直线上。When upright, the human spine forms a natural "S" curve, but when lying flat, gravity straightens this curve, leaving the lumbar region unsupported or compressing the cervical spine. The ideal Support System is not necessarily the firmest one, but one that, across different sleeping positions, maintains neutral spinal alignment, keeping the ear, shoulder and hip in a straight line.