To really blow the lid off your workouts you need to get the right pre workout ingredients. You’ll feel invincible as you smash the free weights, crush the cardio and make the gym tremble under your feet. Make informed choices about your prep supplement and you’ll feel like you can take on the world. Get the wrong one though and you’ll feel flat, wired and weak. Not only will you waste your money but you’ll sacrifice your gains too. In this article we’ll take a look at guarana – a plant seed from South America. Is it a good pre...