Crunching Too High The ab crunch is a subtle movement that lifts the shoulder blades a few inches off the floor. Jerking the shoulders up adds momentum and reduces the effectiveness of the exercise. Segure a barra utilizando as palmas DE mãos voltada para baixo. As mãESTES devem estar separadas https://ledbookmark.com/story3598227/5-t%C3%A9cnicas-simples-para-abdominal-solo