Tea & wellness
Caffeine amounts, L-theanine, and tea-versus-coffee comparisons — written from published research themes, not medical advice.
Showing all · 4 guides
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Green tea Matcha L-theanineTea and Meditation: How to Build a Mindful Tea Practice
How L-theanine in tea supports relaxed focus, which teas suit meditation, and a step-by-step breath-and-sip practice you can start today.
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Caffeine L-theanine Tea vs coffeeTea and Sleep: Caffeine Timing, Evening Teas, and a Bedtime Ritual
Learn how caffeine timing, decaf and herbal choices, L-theanine, and a simple bedtime tea ritual can fit an evening routine.
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Caffeine Matcha Green tea L-theanineMatcha Caffeine: Dose by Form, Gram, and Prep
How much caffeine is in matcha by gram, usucha, koicha, latte, and culinary scoop — plus scale protocol and a dose ladder. Informational ranges only.
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Caffeine Matcha Green teaCaffeine by Tea Type: How Much Is in Your Cup
Caffeine ranges by tea type — matcha, black, oolong, green, white, pu-erh — plus brew variables and a comparison table. Research summary only.
Tools
Tools for ranges
Caffeine (and tea vs coffee) plus matcha dose estimates — research-style, not medical advice.