The answer, it's because they eat foods that fit the body. It is time to sleep, exercise. Don't eat late at night is knowing each other although they advertise as knowledge base comes from receiving education.
The answer is because eating moderate physical exercise, not eating late at night as it is already doing as well as basic knowledge gained from the study.
The answer is because the food appropriate to the body, exercise, sleep a time. Don't eat late. What is known here and it is the knowledge that is basic since education.