The dangers of too intense sexual intercourse between men and women

　　Foreign medical research has found that vigorous sexual life can lead to temporary blindness, which should arouse people's attention. Researchers believe that blindness caused by intraocular bleeding during sex may be caused by the rupture of blood vessels in the eye due to increased blood pressure. People's blood pressure increases during orgasm, and intermittent breath holding at this time will increase the blood pressure even higher. People over middle age are more likely to suffer from blindness when engaging in strenuous sexual activities.
　　
　　In order to prevent blindness caused by sexual intercourse, it is not advisable to eat or drink before sexual intercourse to avoid excessive fatigue. Do not use artificial strong sexual stimulation. People who are usually sedentary and inactive should not hold their breath during sex. hypertension, coronary heart disease , fundus hemorrhage and other diseases, should restrain their sexual life, they should lie on their side during sexual intercourse, and use gentle force to prevent bleeding accidents. Once hemorrhagic blindness occurs, you should seek medical treatment promptly. Vision can be restored after the blood is absorbed.