A strategy to not to be fat again is to take a rest completely from eating – to fast. The human body was designed to deal with periods of not eating at all. Our hunter-gatherer ancestors fasted because food was not always available. Fasting, or giving the body a rest from food, is one of the oldest and most effective healing methods. We fast every night, which is why we call the first meal of the day "breakfast". Time without food moving through the digestive system is critical to our health. Because our cells do not have to devote energy to the hard work of digestion, they can tap into energy needed for detoxification, maintenance, and healing. Giving your body additional periods of fasting besides overnight is a healthy habit to add to your lifestyle. Time without food means fewer calories, which supports weight loss, and this resting period allows for many healthful body functions that support weight loss and weight maintenance.

Whether you begin by fasting through just one meal a day, two meals a day, one day a week, or three days a month, your body will have extra time to cleanse and detoxify. Several studies suggest that fasting extends longevity.