The military report from the German Medical Science journal had found out that dozens of soldier in the Watchbataillon unit had develop a boob only on the left side of their chest.
According to a plastic surgery experts at the military hospital in Berlin, Professor Bjorn Krapohl, the condition is called the 'one-sided gynecomastia', it is due to the repeated slapping from their rifle shooting routine.
The drills stimulate male mammary glands which stimulate the glands to produce hormones, eventually it will make their chest to become swollen and it grew as big as a normal women breast.
Although the weird condition had been reported effecting several soldiers int the batallaillon, not all of them are effected, at least 35 soldiers had been identified having the condition.
A video of their training routine shows that, they've practice a routine which requires them to hit their chest very hard and frequently.
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