Eyes one foot away from the paper: eyes should be one foot away from the paper, not too close or too far away. Nowadays, many people are nearsighted and used to being close to paper, which is not a good habit.
One inch from the pen tip: the distance between the hand and the pen tip is one inch, which is the skill of holding the pen. Generally, the pen is about the first third of the whole pen.
Lift your chest up from the edge of the table. The chest should not lean against the table, nor should it be too far away from the table. The best punching distance is to keep your head straight, your shoulders flat, your body straight, your body slightly forward, your legs together and your feet flat.
Harm of incorrect sitting posture
Improper sitting posture of children will have a series of effects on healthy growth. People sit for a long time in a day, especially students at school. Improper sitting posture can lead to many diseases, which have adverse effects on physical development, such as hunchback and chicken breast. Sitting may lead to scoliosis in children, which may lead to spinal diseases.
In addition, incorrect sitting posture may cause ligament strain. There are many diseases such as cervical spondylosis in modern society. If children don't develop good habits when they are students, it is easy to advance the onset time of cervical spondylosis or cause motor dysfunction of shoulder joint and scapula.
For the above contents, please refer to People's Daily Online-Primary school students start early, and first-year students learn to sit in the first class.