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Glucose is the gasoline we run on. It keeps our hearts heating, our blood flowing. It lets us shrug our shoulders and put one foot in front of the other. It is the only nutrient that becomes instant energy.

The way we are meant to get glucose is from glucose-containing foods, which means carbohydrates. They provide glucose immediately, as soon as they are metabolized. Carbohydrates turn into energy. That's their purpose. Because this is a high-energy diet, the Beverly Hills Diet is a high-carbohydrate diet.

We're all locked into thinking that carbohydrates are more fattening than protein. Yet both protein and carbohydrates have the same number of calories—four—for each gram of weight. There is no caloric difference between the two.

Calories are energy, pure and simple. Carbohydrates are energy, pure and simple. Remember, glucose is energy and carbohydrates turn into glucose. You should get your energy from carbohydrates because that is what they are meant to provide. It is far more efficient than getting your energy from protein. Getting energy from protein is a waste because, remember, protein only becomes energy (that is to say, amino acids only become glucose) after it has completed the building process. Consider all that extra energy you use in the process of converting protein to energy. All that wasted time before you get it and utilize it.