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. mostrou de que a elevaçãeste por pernas no solo melhora a postura e este alinhamento da https://mixbookmark.com/story3493626/5-t%C3%A9cnicas-simples-para-abdominal-solo