Stretch your spine as much as possible. When you sit down, your hips should be as close as possible to the back of the chair, your upper body should leave the backrest and lean forward slightly. Put the fists of both hands on the bottom of the ribs, and let the two fists move back slowly in the horizontal direction to stretch the back. Grasp the hands on both sides of the chair with both hands, lift your body slightly hard, then lean on the backrest and fall down slowly. In this process, if your back is not close to the back of the chair, you can effectively stretch your spine.
When standing upright, first put the center of gravity on the heel, let the knees relax and bend gently. However, the knees should not be too bent. If you do this, the quadriceps femoris will be over-stressed, which is not good for your health. Then open your shoulders back and hold your chest out to prevent hunchback. Don't think that this has nothing to do with sedentary fatigue. Sedentary fatigue can make your back comfortable and feel much more relaxed.
Stretch your body. When we feel tired after sitting for a long time, we need to move our bodies and keep our posture for a long time to avoid being stiff. At this time, it is best to move our bodies. Although many people feel very tired now and turn to swivel chairs, it is actually difficult to maintain a good sitting posture when sitting. In this way, you will feel more and more tired, and even lead to spinal deformity.