What happens when you mix Concerta and monster energy drinks?

Well, for me anyways, I take 72mg of Concerta every other morning. The way I take it is as prescribed, two 36mg pills when I wake up. Of course, this only helps from about 5:30am until around 2:00pm. I usually drink one to two 16oz Monster Energy Drinks before 8:00am. I know I'm wired, because when I'm moving around I fell like running (I'm over 300 pounds, so this is unusual), but I can sit still and concentrate on school work (graduate level computer science) for hours on end.

I will give a warning; however, once the Concerta and energy drinks wear off, the crash is horrible.