yeah......
theoretically that is what one is supposed to do.
Very dumb in it's creation.
The concept is good, but you don't eat a percentage of those 33%'s of each macro at EACH MEAL. Go ahead and combine fats and carbs in a meal, even if you are under your daily caloric intake for the day at the end of the day, your body doesn't know that, and will store fat from those meals containing fats/carbs. Someone said pizza would fit on an isocaloric diet, but to just "drink some protein with it". Yeah, eat pizza and whey protein 6 times a day and tell me if you don't gain mad weight. You can even be under your daily total, but that won't matter. As long as you are storing fat at damn near each meal, what does it matter how many calories you think you are under maintenance? Anything you are losing, if it's not muscle, will be put right back on.
Know where, when, why, how much of each macronutrient to eat at each meal you consume. Ultimately, THAT is what shapes you. Make in continual and you'll see your progress weekly.
~SC~