Blood pressure is most accurately measured when you are quiet, emotionally stable, have not eaten spicy or stimulating foods, and have not consumed alcohol, coffee or strong tea. Human blood pressure is affected by a variety of factors, generally speaking, it is closely related to emotions, exercise, diet, etc. Therefore, it needs to be measured when the following five conditions are met. 1. Quiet state: Generally speaking, it is necessary to sit still for 5-10 minutes after exercise before taking blood pressure measurements. This is because the blood pressure will rise during exercise, which will lead to inaccurate blood pressure measurement. 2. Emotional stability: Generally speaking, when you are emotionally excited, it will lead to fluctuation of blood pressure, such as too much anger, joy, etc., which will lead to increase of blood pressure and inaccurate measurement of blood pressure. 3. Not eating spicy and stimulating food: Spicy and stimulating food can cause the body’s vegetative nerves to be stimulated, which may trigger the blood pressure to rise, resulting in inaccurate blood pressure. 4. Not drinking alcohol, coffee or strong tea: Coffee, strong tea and alcohol will stimulate the sympathetic nerves of the human body, resulting in a faster heartbeat, which may lead to an increase in blood pressure. In conclusion, blood pressure needs to be measured correctly to reflect the state of health. Whether it is hypertension or not cannot be concluded on the basis of 1 or 2 measurements, but needs to be measured several times for a comprehensive assessment.