1. Promote metabolism: Tea polyphenols in black tea can promote metabolism in the body, thus increasing the metabolic rate of the body.

2. Relieve stress: Theanine and caffeine contained in black tea can promote the excitement of the nervous system, thus relieving stress.

3. Prevent thrombosis: Flavonoids in black tea can prevent thrombosis, thus preventing cardiovascular diseases.

4. Improve heart health: Tea polyphenols in black tea can reduce blood pressure and cholesterol levels, thus improving heart health.

5. Enhance immunity: Tea polyphenols contained in black tea can enhance immunity, thus preventing diseases such as colds and flu.

The function of women drinking black tea;

1. Keep fit: Tea polyphenols contained in black tea can promote fat metabolism, thus helping women keep fit.

2. Increase the hemoglobin content: Iron and vitamins in black tea can increase the hemoglobin content of women, thus preventing anemia.

3. Relieve dysmenorrhea: Theanine and caffeine in black tea can relieve the symptoms of dysmenorrhea in women.

4. Improve skin condition: Tea polyphenols in black tea can resist oxidation, thus improving women's skin condition.

Taboos for women to drink black tea;

1. Pregnant women should not drink more: black tea contains caffeine and theophylline, which is not good for the development of the fetus, so pregnant women should not drink more.

2. Patients with peptic ulcer should not drink more: tea polyphenols and other ingredients in black tea may stimulate gastric mucosa for patients with peptic ulcer, so it is not advisable to drink more.

3. Drug interaction: Tea polyphenols and caffeine in black tea may interact with drugs, affecting the efficacy of drugs, so attention should be paid.