"Crunches are much more effective than regular sit-ups because they specifically target your upper abdominal muscles rather than your hip muscles. If you're not used to them, they can cause soreness a day or two later, but it's a 'cool' soreness. A badge of honor."

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Delaying a meal brings about symptoms most people call "hunger." These symptoms include abdominal cramping, weakness, and feeling ill-the same as during drug withdrawal. This is not hunger. Our dietary habits, especially eating animal-protein-rich foods three times a day, are so stressful to the detoxification system in our liver and kidneys that we start to get withdrawal, or detoxification, symptoms the minute we aren't busy processing such food. Real hunger is not that uncomfortable.

— Joel Fuhrman