i almost did :(
...you might want to do something about that .-.
seriously though, don't think so much! feel! YOU ARE NOT MACHINES, YOU ARE MEN.
Can you not read?You don't have to starve yourself. If you work as much as an "average adult" you only need 2000 calories a day to be perfectly fine. If you consume 1900 a day, then you will lose 100 calories in fat a day, only a few grams. You won't even be lacking any food, because your body already has it stored.
depends on many number of factors including daily activities, metabolism, gender, etc...