What's in Your Energy Drink?

We all know what it feels like to get no sleep over the weekend and show up to work Monday morning in a zombie like state. No amount of coffee will do the trick. Your eyes start to close, you can't concentrate, and all you want to do is crawl into bed. Well, you may be able to take a power nap during lunch if you have that luxury. Most likely, you are still required to perform and give that speech to a room full of inquiring minds. What can you do to keep from falling asleep at your desk?