4. Improve brain function
Until last year, the effects of green tea on cognitive function were speculative, but with the improvements in functional magnetic resonance imaging (fMRI), some scientists noticed the increased connectivity in the cortices of the brain after consumption of green tea. Specifically, green tea drinkers showed increased connectivity in key parts of the brain associated with memory. consuming green tea extract not only showed increased connectivity in parts of the brain, but improved performance on working memory tasks as well.