As a unique free amino acid in tea, theanine can significantly promote the release of dopamine in the brain, increase the physiological activity of dopamine in the brain, make people happy, enhance memory, and improve learning ability. At the same time, research has also shown that it is effective in causing sleep Theanine can also play a protective role in the nervous system and emotional factors of the problem. In short, tea theanine can regulate sleep problems, improve sleep quality, stabilize emotional state, and relieve stress.