“It is not food or good conditions in life that secure good health. It is a saintly life, the life of Christ. I know hermits who fasted with the greatest austerity and were never ill. You’re not in danger of coming to any harm by fasting…To do this, however, you need to have faith. Otherwise you will feel empty and nauseous and have a craving for food. Fasting is also a matter of faith…When you have love for things divine, you can fast with pleasure and everything is easy; otherwise everything would seem impossibly difficult.”

St. Porphyrios