For a flat stomach, you do not have to torture yourself and do an infinite number of sit-ups because we found the easiest exercise to achieve a flat stomach. Fitness experts say it is more efficient than many abs crunches. This exercise could not be easier, and the only thing that matters is that you have to breathe properly.
In this exercise, with breathing, we activate and strengthen the deepest abdominal muscles. In fact, breathing is provoking contractions.