Eating low-carb causes your body to burn more fat -- Your body needs energy and that energy can come from carbohydrates or fat. We've already talked about the advantage of eating a high-fat diet and the disadvantage of eating a high-carbohydrate diet, but there's another very important point that we need to cover . . .
When the human body is deprived of carbohydrates, it begins breaking down fats into ketone bodies, which can be used as an energy source.
There are many advantages to being in a state of ketosis, where the human body is constantly producing ketone bodies and therefore using fat instead of carbohydrates as fuel, not the least of which is that there are no "sugar rushes" nor are there any "sugar crashes", rather there is a constant, even energy.
But the most important advantage that a fat-fueled body has over someone running on carbs is the simple fact that a fat-adapted body has been trained to constantly burn fat!
You're lying on the sofa? Your body has to burn fat to fuel your bodies functions!
You're running a marathon? Your body has to burn a lot of fat to fuel your energy output!
Once you're fat-adapted, your body will literally be burning fat 24/7 and that is a tremendous advantage, whether you're cutting or bulking!!!
If you're cutting fat, you'll be burning body fat at an incredible rate, while preserving muscle and strength!
If you're building muscle, you'll be able to use body fat instead of dietary fat to fuel your workouts and recovery, thereby eating less and still growing bigger and stronger, often achieving what can only be described as the holy grail of dieting -- building muscle and burning fat at the same time!!!
Why are there two low-carb
The answer is "G-Flux"
G-Flux is the difference between the calories a person burns in a day without exercise or other physical activity and the amount of calories he burns including all his physical activity.
A bodybuilder who doesn't do cardio, for instance, has a relatively low G-Flux because he only needs enough energy (calories) to go throughout his day, fuel a one-hour weight workout and recover from the workout.
A professional mixed martial artist on the other hand would have a very high G-Flux.
A typical day for him would include strength training, endurance / conditioining work, wrestling / grappling, boxing / kickboxing and full-on MMA sparring. The number of calories he burns in a day would be enormous compared to the bodybuilder, not to mention the calories and nutrients he would need to recover and rebuild his body after those workouts.
Although many of the principles are the same, I have seperated the low-carb bulking diets into two separate books -- HIGH G-Flux and LOW G-Flux to make sure that both diets are as easy as possible to understand and to apply.