There are numerous health benefits attributed to tea and more and more scientific studies that support the claims.Green tea is believed to improve immune system. Green tea has Theanine, which can strengthen your immune system, enhancing your body’s response against infections. It can also help you cope with stress.Stress is obviously difficult to avoid, but drinking green tea can help your body regulate the production of Cortisol, also known as the stress hormone. There are countless other benefits from drinking tea not the least of which is the pure pleasure of drinking it.