Working makes me fat

Why do I say so? Because working here, I eat plentiful of tibits everyday. There are candies, chocolate, crackers, chips, biscults here. 2 weeks ago Michelle & me bought $12 worth of crackers!! We finished them in, lets say, a week? Everyday, I will start to eat snacks and tibits from 3 PM to 5 PM. How can working make me not fat? Ughh...fat.