Relieve mental stress and entertain physical and mental functions With the development of the times and the progress of society, people enjoy the comfortable life and various conveniences brought by science and technology, but also bear mental pressure from all sides. Studies have proved that long-term mental stress will not only cause various psychological diseases.

Moderate sun exposure: The absorption and utilization of calcium by human body cannot be separated from vitamin D. The ultraviolet rays in the sun can help 7- dehydrocholesterol in the skin to synthesize vitamin D, thus promoting the absorption and utilization of calcium by human body. Moderate sun exposure every day can prevent osteoporosis.

Develop a good posture

The main emphasis is on sitting posture and lying posture. When sitting, your hips should fully contact the chair surface, your shoulders should be spread back, your spine should be upright, and your feet should land. When writing, the head leans forward slightly, the connecting line between the two shoulders is parallel to the edge of the table, and the front chest is not oppressed, so that the head, neck, shoulders and chest maintain a slightly tight normal physiological curve.

Adjust the height of tables and chairs to the best state proportional to their own height, to avoid excessive backward or forward flexion of the head and neck, so as to reduce the fatigue caused by sitting for a long time. Choosing a good pillow when sleeping, especially the middle and low-end gold ingot pillow, is conducive to maintaining the physiological position of cervical lordosis.

Refer to the above? Baidu encyclopedia-spine exercise