During fasting avoid all company. Utilise your time in Sadhana. When breaking a fast do not take a heavy meal or a heavy food that is hard to digest. Milk or some fruit juice is beneficial. Moderation in eating and withdrawal of the senses in Yogic meditation are the obverse and the reverse of the same coin.
Moderation consists in taking a little food or water just to keep the body in good working order.
The Yogi withdraws his senses from the particular sense objects. The senses are made to turn into or get involved into the mind. When one is fully established in these two practices supreme control of the senses is achieved. Once them was a demon, Mura, who oppressed the gods. The gods approached Lord Hari for protection.