Sleep & Energy
The unique combination of caffeine and L-theanine in tea creates a state of alert calmness. Understanding caffeine content across tea types helps you choose the right tea for different times of day.
The Caffeine Puzzle
Tea caffeine content varies by cultivar, harvest season, altitude, and processing. Generally, tender buds contain more caffeine than mature leaves; summer tea is higher than spring or autumn harvests; high-mountain teas often have elevated caffeine due to temperature swings. Caffeine levels: green tea 2-3%, oolong 3-4%, black tea 3-5%.
L-Theanine — Tea's Calming Force
L-theanine is a unique amino acid in tea that promotes alpha brain wave production, helping relax the mind without causing drowsiness. This "alert calm" is the key difference between tea and coffee. Green and unfermented teas have the highest L-theanine content.
Daily Tea Timing Guide
Morning: aromatic oolong or light green tea gently awakens body and mind. Afternoon: black tea provides sustained energy without disturbing nighttime sleep. Stop drinking high-caffeine teas two hours before bed — white tea or chamomile are better evening choices. Caffeine-sensitive individuals should limit tea intake from midday onward.
