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 que a elevação do pernas pelo solo melhora a postura e o alinhamento da coluna https://push2bookmark.com/story18221455/uma-an%C3%A1lise-de-renato-cariani