Folklore says green tea helps you achieve deeper states of consciousness, especially during meditation. Science says green tea contains an amino acid called thea-nine, which aids in increasing concentration and attention while reducing fatigue and stress.
The most popular and potent version of green tea is called matcha. To create matcha, the plant is shaded from the sun for about three weeks before harvest. Shading the plant increases the levels of theanine. The ground powder made from these shaded green tea leaves is mixed directly into hot water to create the drink. (Tea is usually made by infusion, where the leaves are strained from the drink.) Drinking a mixture rather than an infusion allows your body to absorb more nutrients.
Green tea contains antioxidants and nutrients that improve your brain’s performance. Green tea also contains polyphenols, which may improve memory, learning, and cognitive function.