Overweight • 23 When you think these thoughts unconsciously and habitually, you won't even recognize that you are causing your own hunger. By thinking thoughts in your brain, your body will "feel" hungry and you will eat. This has nothing to do with what your body truly needs for fuel. I often ask my clients, what is the most important thing you should eat the most of when you are trying to lose weight? The answer is not protein or kale or green juice. The answer is your own fat. The most important thing to eat is the fat tissue on your own body. Body fat is a fuel source. That is the reason it’s there, to provide your body with fuel. It's got everything you need. When you eat food, you can't utilize all of it for fuel at that moment, so your body stores some of it for later. The problem is, when you are eating all Body fat is a fuel source. That is the reason it’s there, to provide your body with fuel.