Calorie Count vs Empty Stomach

What is more important to ensure weight loss while fasting?Everyone who fasts always makes sure to drink water which I understand.But is it more important to keep the stomach empty while fasting or to stay low on calories while fasting?If I drink electrolytes, 0-5 calorie flavor packets for water, and/or diet pepsi would that be the same as only drinking water or would the added sugars or ingredients make it so that im not really fasting? via /r/intermittentfasting https://ift.tt/dtkVj6o https://ift.tt/v3LYxrP