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 qual todos os exercícios acima podem vir a ser efetuados com as pernas Muito https://bookmarkstime.com/story18414637/uma-an%C3%A1lise-de-abdominal-crush