M Matty New member Feb 15, 2011 #1 im 14 and i want to join the marines so i start doing their pressups, but i can only do about 15 and my arms are shaking the whole time, why do they shake?
im 14 and i want to join the marines so i start doing their pressups, but i can only do about 15 and my arms are shaking the whole time, why do they shake?
