1. prevention of cardiovascular and cerebrovascular diseases: soaking in water together can improve the absorption of antioxidants, thus preventing cardiovascular and cerebrovascular diseases.

2. Improve the body's immunity: soaking in water together can improve immunity, supplement nutrition and enhance physical fitness.

3. Runchang laxative: it can protect liver and reduce fire, promote gastrointestinal peristalsis and relieve constipation. Note that it is not advisable to drink too much for a long time, and people who are allergic to black tea and lemon should also avoid using it.

Drinking black tea and lemon in moderation is good for your health;

1. prevention of cardiovascular and cerebrovascular diseases: soaking in water together can improve the absorption of antioxidants, thus preventing cardiovascular and cerebrovascular diseases.

2. Improve the body's immunity: soaking in water together can improve immunity, supplement nutrition and enhance physical fitness.

3. Runchang laxative: it can protect liver and reduce fire, promote gastrointestinal peristalsis and relieve constipation. Note that it is not advisable to drink too much for a long time, and people who are allergic to black tea and lemon should also avoid using it.

Hot lemon black tea has the following possible effects and functions:

1. Improve immunity: Lemon is rich in vitamin C, which is beneficial to improve immunity and enhance body resistance.

2. Antioxidant effect: Black tea is rich in tea polyphenols, which has antioxidant effect and can reduce the impact of free radical damage on the body.

3. Promote digestion: Lemon contains citric acid, which can promote gastrointestinal peristalsis, increase gastric acid secretion and help digestion.

4. Improve your breath: Citric acid in lemon can neutralize acidic substances in your mouth, reduce bad breath and improve your breath.

5. Eliminate fatigue: Black tea contains caffeine and theophylline, which can refresh the mind and eliminate fatigue.

Please note that the above are the possible effects and functions of hot lemon black tea. Everyone's physical condition is different, and the specific effects vary from person to person. There is no guarantee that these effects will exist. At the same time, lemon and black tea may have different degrees of side effects and taboos for some people, such as allergies, gastric ulcers, heart diseases and so on. Please consult a doctor or professional before drinking.