Earlier quoted context omitted.
Is there much difference between the effects of mate and standard black tea? Because there's almost the same amount of caffeine in a strongly brewed black tea as there is in coffee. http://www.theguardian.com/news/2013/nov/27/caffeine-compare...
Nevermind the tea. How does it compare to modafinil?
https://www.google.com/search?q=crianca+chimarrao&num=20&sou...