Im going to a concert next month then will have a very intense pit. The pit is the reason im going and i want to be able to stay in as much as possible. I was considering taking a 5 hour energy before so that i have more energy. Im curious as to whether or not this will work for what i want, and if its safe to take the shot then do intense physical activity for at least a couple hours, and help would be greatly appreciated. I would check review sites but for all i know the company it self can sway those.