Tea is rich in polyphenols that have effects like alleviating inflammation and fighting cancer. Some studies have shown that caffeine and L-theanine can have synergistic effects. Green tea contains both and can stimulate our brain. It promotes fat burning and enhances physical performances. It also helps in killing certain bacterias which are harmful to our body. Apart from this, it is a great anti-oxidative agent which is really good for a healthy body and mind.