What energy drink keeps you up the longest?

Which energy drink gives you energy and keeps you awake?

• Emerge,boost,redbull,lucozade etc

• Answer:

  I go with monster. They have a zero cal version, which I actually like a lot. All the ingredients listed have been shown to be either beneficial or benign, though not all have been researched in humans over extended time. Typically, I drink one after my lunch break, though I'm awesome and don't need a morning boost.