alt Hacker NewsI tried getting on it several times, I would feel energized at first but after a two or three days it would do the opposite and I would get very lethargic.
My body has a strange reaction to comonly used substances, though. For instance, even a single soda's worth of caffeine causes me to have an extreme 18-24 hour mania phase and then a two day crash afterwards. So, your mileage will definitely vary.
Fun fact! that's most likely caused by your DNA having both the CYP1A2 gene and the ADORA2A gene. Means you can buy a bottle of soda and only drink a shot of it and get the same benefit as others without those genes set.