Well, this is my take on it...it's sort of a combo of other diets out there like the Zone and I think like WW. You eat every 3 hours, which to me is like the WW and Curves and all that, you eat your breakfast, 3 hours later (no later than that) you have a 100 calorie snack (like a Dannon smoothie or those new Nabisco 100 calorie snack packs), then 3 hrs later a 400 cal lunch, then 3 hours later a 100 cal snack, 3 hrs later a 400 cal dinner then a "treat" like a Hershey's minature or whatever you want that's 50 cals. You stop eating 3 hrs before bedtime. You drink lots of water. Nothing is off-limits. Your meals are balanced, he has a visualization of a rubik's cube size of carbs, card deck of protein, 3 dvd's of veggies or 1 medium fruit, and a water bottle cap of fat. No exercise necessary but of course very beneficial! One of the keys is timing...if you wait over 3 hours to eat your body sends out "starvation hormones" and hordes your body fat. The other is to make sure you eat EVERYTHING - no skipping. You need to eat a certain number of cals (he has it around 1450 for people under 200 #s) to keep your metabolism going so it won't slow down, which he says a reason dieters on low cal diets can stop losing even though they're not eating much. One of the dieters on that 48 Hours (or was it Dateline?) did this and has maintained her weight loss, she's actually lost more since the show aired.
My first day I was hungry and "snacky" then it got better. I find that I have more energy too.