L-theanine is a Healthy Amino Acid in Japanese Green Tea
L-theanine is the main reason why tea is relaxing and relieves stress, as compared with coffee, even though both contain caffeine.
Japanese green tea contains high amounts of L-theanine- a natural amino acid found in shade-grown green teas such as matcha and gyokuro.
L-theanine has been shown to reduce mental and physical stress, improve cognition and boost mood in a synergistic manner with caffeine.
Consuming green tea (or matcha) can reduce stress and anxiety, and boost mental health and performance by inducing a state of relaxed awareness.
L-theanine reduces heart rate, blood pressure, cortisol, and feelings of stress and anxiety.