The idea of fasting is still tied to the spiritual and religious practices. When we first heard about fasting, we immediately relate the term to the Catholics who practice this during Lent or to Muslims during Ramadan. In ancient times when people fasted they believed that doing so would improve their clarity of thought, and bring spiritual enlightenment and inspiration. In fact many people who fast relay a feeling of being more removed from the physical and a more spiritually focussed consciousness. It should be reflected however, that having strong values is integral to this - as mental attitude is huge part of ones sense of the world.