Easy exercises to get a flat stomach. Having a flat stomach is not impossible: with these 6 simple exercises that I tell you, to do at home, you can succeed in a short time. How? Simply by being constant, do not give up after a few days of training and keeping nutrition under control. It is not strictly necessary to follow a strict diet, but you must be careful about what you eat. The advice is always the same: limit alcohol or sugary drinks, reduce heavy condiments, fried foods and desserts.