Why are German soldiers growing breasts? - The Week Something very strange is happening to the German military. Nearly 75 percent of the soldiers in the elite Wachbataillon guard unit have visited army medics with the same condition: Newly developed man boobs. And in each case, the unwelcome bosom-blossoming only appears on the left side. The good news? There's a way to prevent this from happening in the future. The bad news? The battalion is going to have to make some changes. You see, the Wachbataillon performs drill displays at official events, and because the soldiers repeatedly slam heavy rifles into the left sides of their chests, they are stimulating mammary glands which produce hormones, leading to a condition called one-sided gynecomastia. Military leaders say they are looking into changing the drills. In the meantime, many of the stricken soldiers are resorting to plastic surgery. Maybe they should just get sports bras.