Who would've thought that city life and noisy streets can significantly reduce a man's fertility? I know I wouldn't. A new research reveals that night-time noise disturbs sleep and can lead to male infertility. In fact, less than 6 hours of sleep a night reduces a man's ability of getting a woman pregnant by 43%. Researchers from Seoul National University calculated noise levels from a combination of the participant's locations and the National Noise Information System. They analyzed 206,492 men aged between 20 and 50 from 2006 to 2013. Of these men, 3,293 were diagnosed with infertility. In the results, researchers found that night-time exposure to a noise level that was equivalent to a suburban street, increases that chances of a man to be diagnosed with infertility. Previous research to consider, tooThe author of a past research from Boston University says that "Sleep problems specifically have been associated with lower sperm concentrations, total sperm count and percent of normal sperm morphology (shape), as well as decreased testosterone levels." Additionally, a previous study revealed that every 10 decibels of traffic noise increases a woman's chance of taking more than 6 to 12 months to get pregnant. If there's one thing we can learn from this boys, it's to get your 8 hours of sleep in every night and make sure your lady gets some peaceful shut eye, too!