Memory foam was created by NASA in 1966, while working to increase the shock absorbency of airplane seats. Today, memory foam makes for more comfortable beds, couches and chairs, not to mention better shoes, and etc. Memory foam responds to heat and pressure to reduce pressure points. This means that your spine, neck, and hips are realigned evenly distributing body weight, and effectively correcting a poor sleeping posture. Long-term use has been shown to reduce chronic back and neck pain. Memory foam's body-conforming feature is the best in all mattress types. This viscoelastic foam forms to the natural curvature of your spine, promoting better lumbar support.