In men aged 40-50 years, a systolic blood pressure, or high pressure, of 90-139 mmHg and a diastolic blood pressure, or low pressure, of 60-89 mmHg in a quiet state is the normal range. It is important to note that if the blood pressure is not measured in the correct way, it may lead to errors in the results. Whether using a mercury sphygmomanometer or an electronic sphygmomanometer, measurements need to be taken in a quiet state. If in the case of exercise, emotional changes, smoking, etc., it is generally recommended to take the measurement after 15-30 minutes of rest for more accurate results. Before measurement, the cuff should be emptied of air and then placed on the middle of the upper arm, the lower edge of the cuff is 2-3 cm from the armpit, the tightness to be able to put in a finger is appropriate, too tight or too loose may cause abnormal results. It is also important to note that the arm should be at the same level as the heart when measuring to minimize errors. Possible hypertension is suspected if blood pressure measurements reveal at least three non-same day blood pressure values at or above 140 mmHg systolic and/or 90 mmHg diastolic, and hypotension is considered if blood pressure is below 90/60 mmHg. Patients with abnormal blood pressure should go to the hospital for professional testing and diagnosis in a timely manner to clarify the cause of the abnormal blood pressure and cooperate with the doctor in treating it with medications or other modalities. If you are worried about having abnormal blood pressure, you should pay attention to ensure emotional stability in your life and avoid violent mood swings such as irritability, anger, excitement, and excitement. At the same time, pay attention to quit smoking and drinking, ensure a light diet, pay attention to the intake of salt, sugar, fats and oils, and eat appropriate vegetables such as celery, onions, green peppers and fruits such as apples, oranges, bananas and kiwis. Good habits such as reasonable exercise, regular work and rest, sufficient sleep, and avoiding late nights are all helpful in controlling blood pressure.