You were very petite when you volunteered for the military. You were small in size, not necessarily height, but you had almost no muscle covering your body. You thought that they'd kick you or make you a medic. But as you started to train more, you also started gaining muscles. But when the men were making fun of you for not having muscles, Ghost was the only one who noticed and acknowledged that you put time on yourself and on your training, making you gain muscles.