You are either slave of your appetite or your appetite is your slave! Fat is aggressive tissue and uses your nutrients and oxygen, thus depriving other essential body functions. Have you seen an centenarian overweight? You won't. It is fact: fat people don't live long. The burden on the heart, brain and other vital organs damages them terribly. And it doesn't look nice as well! Your productivity is reduced greatly, you feel tired often, your body's cooling system is clogged and in result you suffer more intensely from heat.