> but it is not possible it has downsides I remember reading somewhere that anorexia used to be more common in highly religious communities where ritual fastin

> but it is not possible it has downsides I remember reading somewhere that anorexia used to be more common in highly religious communities where ritual fasting was encouraged: the devout would fast so long that they would find themselves unable to eat again when the fast was over. If you go too long without eating, you can actually lose the ability to do so. I don't suppose that can happen after just a two-day fast, but it does seem like a "possible" downside to me.