Also the study was ordered by Tchibo - a producer of dark roast coffee. What a coincidence. So naturally they didn't have an interest in finding that (assuming that the result is valid at all - which I doubt) tea with caffeine (or maybe just caffeine pills) has the same effect. Also why did they use a blend on earth? This study doesn't make sense on so many levels. But nobody diggs into it so it's successfully feeding the nutrition misinformation circle jerk.