1. Improve immunity: Old brick tea is rich in antioxidants and vitamins, which can improve human immunity and resist diseases.

2. Lowering blood pressure and regulating blood lipids: Old brick tea contains a variety of active ingredients, which can lower blood pressure and blood lipids and prevent cardiovascular diseases.

3. Lose weight: Old brick tea contains many beneficial bioactive substances, which can help digestion and metabolism, promote fat decomposition and consumption, and achieve the effect of losing weight.

4. Anti-fatigue: Old brick tea is rich in caffeine and other substances, which has the functions of refreshing the brain and inhibiting fatigue, and can enhance human vitality and endurance.

5. Antioxidant: Tea polyphenols and other components in old brick tea have strong antioxidant effect, which can inhibit the generation of free radicals and protect cells from oxidative damage.

6. Relieve stress: Amino acids and other ingredients in old brick tea can improve physical fatigue and tension, relieve stress and anxiety and promote sleep quality.

7. Protect the gastrointestinal tract: tannic acid and other ingredients in old brick tea have astringent, antidiarrheal and inhibitory effects on gastrointestinal inflammation, which helps to protect the health of the gastrointestinal tract.