1, the benefits of black tea. Improve mood: drinking black tea can improve mood. Black tea has the effect of calming the emotions, for the emotions of people who are easily irritable, appropriate drinking some drinking tea, can play a role in improving the mood. Protect the gastric mucosa: drinking black tea can protect the gastric mucosa. Black tea contains some ingredients, after entering the stomach and intestines, can form a protective film on the surface of the stomach. Therefore, for people with a bad stomach, you can drink some black tea to protect the gastric mucosa. Promote appetite: drinking black tea can promote appetite. Black tea contains caffeine, which can stimulate the secretion of gastric juice, thus promoting appetite and helping digestion. Weight loss and slimming: Drinking black tea can help you lose weight and slim down. Black tea contains caffeine and other ingredients that can accelerate fat metabolism and play a role in weight loss.

2, the bad side of black tea. Lead to insomnia: drinking black tea may lead to insomnia. Black tea contains refreshing ingredients, so drinking black tea may lead to insomnia. Affect the absorption of protein: Drinking black tea may affect the absorption of protein. Black tea contains ellagic acid, if you drink black tea at the same time, eat protein-rich foods, may affect the body's absorption of protein.