Sitting on the sofa is also a science
If the sofa is too soft, the support of the human body's center of gravity will be unstable, and people will move their bodies intentionally or unintentionally to seek a new balance and stability. Therefore, sitting on a soft sofa for a long time will make people feel back pain, fatigue and weakness. At the same time, sitting on a soft sofa makes it difficult to maintain the normal physiological curvature of the spine. Over time, it will cause back muscle tension, inducing or aggravating back pain.
Children should not sit on the sofa for a long time, let alone sleep on the sofa as a bed. If you sit or lie on the sofa for a long time, if your posture is not correct, the sofa will exert some abnormal tension and pressure on the muscle tissue, which will cause excessive growth of collagen over time. Excessive production of collagen will have a counterproductive effect, causing muscle pain, and over time, it will affect the normal development of bones. Experts recommend that the time spent sitting on the sofa should not exceed 1 hour at a time. If you must sit for a long time, you should stand up and move for a few minutes every half an hour or so.
When buying a sofa, you should pay attention to the following aspects. First, the seat height. The appropriate height should be equal to the knee height. Second, the depth. When sitting on the sofa to the maximum, the knee joint should still be outside the sofa surface. Third, the angle. If the angle is too large, the neck will soon feel sore. When trying to sit, you can observe whether there is a gap between the waist and the sofa. If there is a gap between the waist and the seat surface that can insert a hand, it means that the weight of the limbs here is not supported and the angle of the sofa is not appropriate. Fourth, the height of the backrest. It is best to reach between the shoulders and ears when sitting down.
Generally speaking, after a busy day outside, young people need to relax every joint of their body, and sitting on a soft and comfortable sofa is the most suitable. However, the muscles and bones of middle-aged and elderly people are older than those of young people, so it is not suitable for them to sit on a soft sofa for a long time. They should choose a harder sofa.