Wouldn't it be more effective if you somewhat quietly went about finding testers, took before and afters, put them on a specific diet and workout plan, had a control group that did the diet and workout plan but not the fat burner.. got desired results, or tinkered with the formula if need be, and then starting hyping the product as "The Most Powerful Fat Burner in the World" and instead of "We think this product may be the ticket to the six pack." you can say We know this product is the ticket to the six pack, here are some tester results to prove it." I mean you're basically saying it's going to be released to the publicin 3+ weeks and hasn't been tested on anybody yet, correct?
Just a thought, feel free to market as you please. Good luck with the product launch, nothing would make me happier than the rare effective supplement being released.