This is a great article by Charles Poliquin. Poliquin, in case you haven’t heard of him, has been training high level professional and Olympic athletes for years. This article reviews studies done that show anaerobic exercise is the most effective way to burn fat.
“Based on the clear evidence that high-intensity anaerobic-style exercise is best for burning visceral and total body fat, it’s reasonable to make the conclusion that high-intensity resistance training would be effective as well. For example, circuit training with heavy weights can be effective for hypertrophy, and it triggers a potent growth hormone release, leading to more fat burning.”
I’ve pasted the link to the whole article here. http://www.charlespoliquin.com/ArticlesMultimedia/Articles/Article/698/Belly_Fat__Lose_It.aspx.
It seems like every time someone wants to lose weight they say “Guess I better get my running shoes and jog a little”. This drives me nuts. It seems fairly obvious to me that sprinters carry more muscle and lower body fat and are a lot more athletic, and look a lot more useful than distance runners.
Anyway, this fits right into what CrossFit is all about. Be athletic, learn new things, build muscle, sprint, work hard and fast. This article puts some more science behind what we know to be effective. I hope you enjoy it.