I don’t think this radical diet is good for the body because it is similar to fasting. Although I understand that the egg is a complete meal, still it is not sufficient to be the sustenance for 1 day. Maybe even 2 or 3 eggs a day is not good either because it can make the body very weak not only with hunger but also due to the lack of nutrients. My suggestion is to eat the egg with steamed rice to at least give some heavy feeling for the tummy. The rice will take care of hunger for a longer time.