It’s getting cramped down thereEven though one sperm is needed for fertilization, there’s a reason why the testicles produce so much sperm: most simply can’t survive the journey to the uterus. Among them is Michael Eisenberg, a professor of urology at Stanford Medicine, who wondered whether the forces that have caused this drop in sperm counts and testosterone levels may have also altered men’s physical anatomy. \n\n\n\nBigger penis, bigger problems\n\n\n\npenis size over such a short time is obviously unnatural and could be a physical symptom of a host of problems that may plague men's reproductive health