Flat belly. Sit ups

It is very important to choose the right technique of the exercise.
Having picked up the necessary exercise and making a diet aimed at achieving relief and burning of subcutaneous fat - you can easily, in a couple of months, be able to see instead of a sagging belly - a tight embossed press.
A clear demonstration of the correct technique of doing the exercise.
Want to have a flat stomach? It all depends on you...