1, aggravating hypertension: Caffeine is often combined with other simple painkillers because of its analgesic effect. However, if you take a lot of caffeine for a long time, if you already have high blood pressure, using a lot of caffeine will only make your situation worse. Because caffeine alone can raise blood pressure, if combined with emotional tension, it will have a dangerous multiplier effect. Therefore, people at risk of hypertension should especially avoid drinking caffeinated drinks when working pressure is high.
2, improper coffee will affect sleep: it is best to drink coffee after meals, because coffee can promote gastrointestinal peristalsis, help digestion, decompose high-calorie and high-fat foods that have just been eaten, and will not stimulate the stomach because of drinking coffee on an empty stomach. If you drink it every day, it will have a good effect on improving constipation.
References:
Baidu encyclopedia? coffee