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. Vale lembrar que todos os exercícios acima podem vir a ser efetuados com as pernas Ainda https://sociallawy.com/story8297332/5-t%C3%A9cnicas-simples-para-abdominal-solo