Green tea
Only 30% of tea consumed around the world is green tea despite it being the least processed kind of tea. Green tea contains only a small amount of caffeine, so people can enjoy it as an alternative to black tea or coffee. Besides help you relax after a long day, drinking it may also strengthen the immune system.
It contains flavonoids, an antioxidant that boosts immunity, and it has anti-inflammatory properties. A study states that the antioxidant catechin, which is heavily prevalent in green tea, is known to be a powerful antibacterial and antiviral and can kill off cold-starting bacteria and the influenza virus. It is also said it helps to improve and maintain one’s cognitive function.