4 times should not drink coffee

offee helps you stay alert, increase energy. However, it is not the time to drink coffee.

1. When the coffee is too hot
   Many people have a habit of drinking coffee right after the brew, while still very hot. Consuming hot beverages over 65 degrees Celsius can increase the risk of esophageal cancer, according to the World Health Organization. Typically, restaurants serve coffee at a temperature of 63-79 degrees Celsius, if you make coffee at home also use hot water to 85 degrees C. So try to wait about 5 minutes, heat The coffee will be at a safe level below 65 degrees Celsius.
2. When you are anxious, stressful
   If you are feeling anxiety, bad mood, coffee can make this situation worse. Caffeine in coffee stimulates the nervous system, producing stress hormone cortisol, which affects sleep, fatigue, cognitive disorders.
3. Lack of sleep
   Many people think that coffee is a natural solution to help you wake up when you sleep. But a recent study found that caffeine will not work if you sleep less than 5 hours a day for 3 consecutive nights. Lack of sleep causes significant impairment in cognitive performance and caffeine can not improve the condition despite high intake.
4. Early in the morning
   Drinking coffee at 6 am does not help you boost your energy. During the first few hours of waking up, the amount of cortisol hormones is at its highest, helping you stay awake naturally. Therefore, many experts recommend that the best time to drink the first cup of coffee is between 10 am and 12 am, when cortisol begins to decrease.