Yerba mate’ is a form of holly and it is the national drink of Paraguay. It is grown in Paraguay,one of the positive effects of this herb is that it strengthens one’s memory. Similar to ginkgo biloba it helps with blood flow to the brain helping it to function more effectively.You should prepare this as an infusion. To see how to make an infusion go to this link: https://lighthouseherbs.wordpress.com/2010/02/20/how-to-of-the-day-make-an-infusion/
Drink 1 cup in the early mornings,you can find this in health foods stores. It contains caffeine,although less than coffee or tea.