Best Pre workout Supplement for Training? Biohacking course http://www.ameerrosic.com/biohackingc... This is an all-natural energy booster powder that you simply mix with a few ounces of water (but sometimes I just pour a packet into my mouth and let the energy hit me right away!). It includes healthy doses of the most bioavailable form of B vitamin, taurine for giving you physical energy, trace amounts of caffeine to stimulate the central nervous system, and L-theanine to increase dopamine production in the brain and give you happy energy (incidentally, with zero chance of a “crash”). I use this stuff as a pre-workout energy boost, I use it before triathlons, and I use it as an alternative to commercial energy drinks to bring me out of an afternoon “slump”. Way healthier than coffee (basically I have one cup of coffee in the morning, then I have this in the afternoon).