|Style over substance|
Inedia (Latin for fasting) is the ability to live without food, sustaining one's body only on air, sunlight, or "insert mysterious energy force here".
 Inedia vs. science
Many people claim this ability, and there are also some "historical" accounts of the ability, such as Roman Catholic Saints. No claims have ever been shown to hold up against scientific inquiry, when the inquiry is allowed to do its job properly; and that's if we assume that starving someone for the sake of a scientific experiment is even ethical. In the best case scenario, proponents of inedia are lying or cheating by eating food and not telling. This may be intentional deceit or the case of a true believer deceiving themselves. In the worst case scenario, practitioners die from malnutrition or dehydration very quickly.