A thing can have an effect on the thing itself if it goes beyond a certain point. Just like a man, he should not sit or stand for a long time as it can have an effect on his fertility and even cause male infertility. Varicose veins are not only prevalent in the lower limbs of the human body, but they can also occur in the scrotum of men, especially when they sit for too long and stand for too long, they are most prone to this problem. Statistics show that about 10% of men between the ages of 30 and 40 suffer from this condition, and among them, teachers, salesmen, and waiters, whose occupations are characterized by prolonged standing, are the most common. Because men stand or sit for too long, it is easy to cause obstruction of the spermatic veins in the scrotum, resulting in abnormal swelling, which means that the venous blood in the testicles does not return well and stagnates in the blood vessels. After a long time, patients may have soreness in testicles, inner thighs, groin and waist, or have testicular softness and small size, etc. In serious cases, the protruding blood vessels can be seen from the appearance, which seriously affects male fertility. According to foreign research, the content of free radicals in the body of varicocele patients is twice as much as that of normal people, but the antioxidant capacity is only 1/2 of normal people, and the excessive free radicals will lead to aging of the body cells, cancer, and increase the incidence of cardiovascular diseases and cataracts. Therefore, doctors usually recommend male patients to avoid sedentary and standing for a long time, moderate rest and exercise to improve the body’s anti-aging ability. In addition, men can always test themselves when taking a hot bath to see if both testicles are symmetrical and whether earthworms or spaghetti-like protrusions appear in the scrotum. If there are symptoms of soreness and pain, you should seek medical attention immediately. Usually, if the symptoms are mild, medication can be administered, and in severe cases, vein ligation surgery can be considered, and about 40% of patients can improve their infertility symptoms after the surgery. Therefore, men should pay special attention to the time they stand or sit. Do not exceed a certain degree, otherwise it will affect their fertility.