There are many things a person can do while fasting, but the number 1 thing is when ever your wanting food, walk outside, take deep breaths and expose your body to the sun and relax, if your able to sun gaze, you have it made, a few blinks will do wonders. To do this shows your willing to return to Nature and live on the food God provided in the beginning of the cycle, your body will be fed and you may just reach the next level.
Those seeking aids, the sorghum and maple syrup does wonders as well as drinking all the herbal tea you wish, etc.