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“L-theanine crosses the blood-brain barrier and has positive psychoactive effects on the tea drinker. L-theanine plays a vital role in modulating the effect of the caffeine in tea, so that it is stimulating yet soothing; in contrast, the caffeine in coffee lacks the balancing presence of L-theanine and so delivers a jagged spike of stimulation that increases anxiety.”
― The Big Book of Kombucha: Brewing, Flavoring, and Enjoying the Health Benefits of Fermented Tea
― The Big Book of Kombucha: Brewing, Flavoring, and Enjoying the Health Benefits of Fermented Tea
