Phendora Garcinia Another one of my quick ways to lose belly fat is to add a sufficient amount of lean protein into your diet everyday. Protein builds muscle and eradicates fat whenever you get enough of it, and it also satisfies hunger which means that you wont want to binge on food all the time. You can get lean protein from foods such as eggs, skim milk, cottage cheese, salmon, tilapia, lentils, black beans, and soybeans as well.