How hard you can keep the fast, totally depends on the firmness and faith of the person as well as on his health. While some people stay hungry for the whole day and eat light fruits only in the evening, some people eat fruits, milk and other things considered pure during the fast instead of eating grains and normal food, while some people eat food only once in the night and that too without salt. In such a situation, one should choose the method of fasting, keeping in mind their health. Here are a list of things you should avoid to have a successful and healthy fast.