Black tea
Among popular teas, black tea has the highest caffeine content, thereby helping to boost energy effectively. Not only provides caffeine, black tea also contains many beneficial compounds, helping to improve concentration and support mood, bringing a more sustained feeling of alertness.
Green tea
Green tea contains a moderate amount of caffeine, about 29 mg per serving of 240 ml. Similar to black tea, green tea contains L-theanine - an active ingredient that helps maintain mild alertness instead of causing a sudden increase in energy.
Green tea is also rich in polyphenols and antioxidants, which are beneficial for memory and executive function, especially when age increases.
White tea
White tea is made from young tea leaves and is less processed than other types of tea, thereby retaining many nutrients. This type of tea has a light, delicate flavor and lower caffeine content than black tea.
Each cup of white tea provides about 6 - 55 mg of caffeine, enough to support alertness. Like many other types of tea, white tea contains beneficial antioxidants, contributing to improving concentration and protecting health.