There are some interesting tips in this article, but the supplements seem a bit obscure to me. I looked up a few on Google and the prices were ridiculous. I found a product called the "spot-on energy patch" that contains green tea, b-vitamins, and an amino acid called taurine, as well as a very low dose of caffeine-- less than a can of coke. The idea of sticking on a patch instead of popping pills or drinking sugary drinks appeals to me. I've just signed up for their free trial.