Adding green tea to your diet could have a number of positive effects on your health. There are several ways to introduce green tea to your diet, including drinking a cup of green tea every morning or simply taking a green tea supplement. Green tea health benefits include higher energy levels without the downsides of coffee. This is why green tea is an ideal beverage for your breakfast. Green tea contains a small amount of caffeine, which is enough to give you energy throughout the day while helping you reduce your caffeine consumption.