Normal human blood pressure is changing every day, with peaks and valleys, all fluctuating. For example, human blood pressure has two peaks every day, the first peak at 9-10 am, the second peak at 3-4 pm, and the rest of the day is lower and smoother, especially at night and after sleep, when blood pressure is lower. Therefore, many people like to take antihypertensive drugs before going to bed, which is wrong. Because the blood pressure itself reaches its lowest level during sleep, taking antihypertensive drugs at this time will lead to insufficient blood supply to the brain and produce strokes, which will greatly endanger human health. Taking drugs is generally recommended about an hour after meals.