Green tea contains antioxidants called polyphenols. These antioxidants help protect the body against cancer and other diseases by fighting free radicals, Green tea may also help lower cholesterol levels. Green tea catechins help lower triglycerides, total cholesterol, and low-density lipoprotein cholesterol.
Drinking green tea may help stimulate the immune system and combat mental fatigue. One of the antioxidants in green tea, epigallocatechin, helps protect cells from damage. The disease-fighting antioxidants in green tea boost the immune system.
Green tea also contains the ingredient, theanine. This ingredient helps to combat fatigue and relaxes muscle tension and even reduces blood pressure.