[darkpuppet]

You could take something like Hydroxycut.. it's got caffeine, green tea extract, and a bunch of other chemicals that'll give you a boost.

But be ware.. most (thermogenic) diet pills can increase stress reactions.. meaning if you're close to a heart attack, it could push you over the edge :P

Personally, I did the pills -- and they do produce results, but the results don't last, and they made me feel like crap (cranky or otherwise)...doing it the natural way was best.