At present, more than 70% of the population in China is in a sub-health state, which is mainly related to various unhealthy lifestyles, accelerated pace of life and great psychological pressure. Sub-health mainly causes physiological diseases, such as gastrointestinal diseases, hypertension, coronary heart disease, etc., and also causes psychological dysfunction, insomnia, loss of appetite, abdominal distension, inattention, irritability, palpitation, chest tightness, etc. Generally speaking, the pulse of a normal person is 60- 100 beats per minute, and the pulse may be too fast, too slow and uneven in sub-health. In terms of sleep state, adults sleep 6-8 hours a day and can rest at noon, while sub-health patients have poor sleep quality, sleep less than six hours, and their blood pressure may be unstable. Therefore, if you feel unwell, you should go to the hospital for further diagnosis in time.