L-Theanine: The One Amino Acid That Calms Your Brain Without Knocking You Out posted on June 29, 2026 L-Theanine: The Complete Guide to the Amino Acid Behind Calm Focus Found almost exclusively in tea leaves, L-theanine promotes relaxation without drowsiness. Here is everything the research says about …Continue Reading about L-Theanine: The One Amino Acid That Calms Your Brain Without Knocking You Out →