What position helps the body rest perfectly?

According to the US Centers for Disease Control and Prevention (CDC), sitting for too long weakens the muscles in the back and abdomen, making them both weak and constantly tense, causing pain. At the same time, the bent posture at the hips and knees impedes blood circulation. Blood stagnates in the lower limbs, causing numbness, swelling, and increasing the risk of deep vein thrombosis. For passengers on long-distance vehicles, this harm is multiplied. They not only sit still, but also have to endure constant micro-vibrations from the road surface, cramped spaces, and nervous tension.

- Ảnh 2. — Sitting posture based on the Zero-G principle is considered the "golden formula"

During the process of researching and studying the impact of space on the human body, NASA discovered that when astronauts relax in a zero-gravity environment, their bodies always automatically adjust to a consistent posture. NASA calls this "Neutral Body Posture" (NBP).

NBP is considered the perfect resting state of the body. In this position, the entire muscular system is relaxed, without any effort to maintain the posture. Most importantly, the pressure on the joints and spinal discs is completely relieved. The spine maintains its natural physiological curve without any mechanical stress.

NASA's discovery has created a "gold standard" in ergonomics when sitting. Accordingly, directly inspired by the NBP posture, "zero gravity" technology (Zero Gravity or Zero-G) was born, with applications commonly found on high-end massage chairs. This technology does not eliminate gravity, but simulates the NBP posture to intelligently redistribute the impact of gravity.

When Zero-G mode is activated, the chair slowly reclines while simultaneously raising the legs. The key is to have the torso and thighs at an angle of approximately 120-137 degrees, while the legs are raised to or above the level of the heart. In this position, instead of compressing vertically down the hips and lumbar spine, the weight is now distributed evenly across the entire surface of the chair back.

The American Academy of Orthopedic Surgeons (AAOS) also confirms that elevating the legs will help improve blood circulation throughout the body and prevent swelling and varicose veins. This reclining position also allows the lungs to expand to their maximum, helping to breathe deeply and increase oxygen to the blood. Finally, because the body is completely supported, the muscle groups from the neck, shoulders, and nape to the legs are relaxed, effectively reducing fatigue and stress.

Many people mistakenly believe that lying flat on the bed is best. However, the flat surface cannot support the physiological curve (lumbar sag), which can easily cause muscle tension. The 90-degree sitting position is the working position (still compressing the spine). Meanwhile, Zero-G is a specialized position for deep rest and recovery, especially effective on long trips.

Source: https://thanhnien.vn/tu-the-nao-giup-co-the-nghi-ngoi-hoan-hao-185251029185550303.htm