Both coffee and tea have become everyday drinks for millions of people around the world. People choose them mainly for waking up in the morning, starting work, or focusing throughout the day. Both are sources of caffeine, but their effects on the body are not the same: coffee awakens quickly, while tea is stable and refreshes for a long time.
Caffeine blocks adenosine receptors in the brain, increasing adrenaline and dopamine, resulting in a strong sense of alertness and attention. While a cup of coffee contains 80-100 mg of caffeine, tea usually contains around 30-50 mg. However, the chlorogenic acids in coffee help caffeine be absorbed into the blood faster. Therefore, after 15-30 minutes of coffee, the energy level rises sharply, but this stimulation quickly decreases.
Unlike this, tea has a complex composition. Its main characteristic substance is L-theanine. This amino acid is found only in tea leaves and affects the brain, creating a state of calm alertness. L-theanine increases dopamine and serotonin levels, reduces stress, but does not cause drowsiness. Therefore, the caffeine in tea does not cause an excessively strong beating sensation.
Tannins in tea also play a significant role. By binding with caffeine, they slow down its absorption. Therefore, the energy effect from tea gradually increases for 45-60 minutes and remains stable for 4-6 hours. The "raise-fall" pattern, like in coffee, is rarely found in tea.
The ratio of L-theanine and caffeine in green tea is 1:1 or 2:1, and studies have noted that this combination is more effective in increasing attention compared to coffee. According to the experiments, participants who received 40-100 mg of caffeine + 97-200 mg of L-theanine were faster in thinking, less distracted, and more stress-resistant.
Therefore, it is advisable to choose who needs what vigor. If you like a fast surge of strength - coffee, if you need calm and long-term sobriety - tea is the best option.
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