Green tea does contain caffeine, but in lesser amounts compared to coffee.
Caffeine stimulates the nervous system, improving alertness and attention.
However, an excess of this ingredient could lead to undesired side effects, such as nervousness, anxiety, headaches, or sleep disorders.
The caffeine in green tea is slowly released into the system, offering a milder, longer-lasting stimulation.
Additionally, green tea is a source of theanine, an amino acid that cooperates with caffeine to boost its positive effects on cognitive function.
Theanine elevates mood, eases stress and anxiety, and enhances memory and learning abilities. It also exerts a relaxing effect, balancing out the excessive stimulation of caffeine.
Green tea is packed with polyphenols, especially catechins, exhibiting potent antioxidant and anti-inflammatory properties.