The bad thing about black tea is that for people with yin deficiency fire, drinking too much black tea may further aggravate the situation of yin deficiency fire in the body, resulting in a higher chance of five heartburn and insomnia. The benefits of drinking black tea are as follows: 1, can warm the cold, because from the point of view of Chinese medicine food therapy, black tea is warm, so for cold limbs and feet, more cold people in the body, appropriate to drink black tea has a good warming and cold benefits; 2, can open the stomach and spleen, because Chinese medicine food therapy, black tea into the spleen and stomach meridian, for people with weak gastrointestinal tract function, indigestion, appropriate to drink black tea has a very good appetite and spleen benefits.