"A mans testicles begin to manufacture sperm at the time of puberty and produce 50,000 sperm per minute, every minute of every hour, well into old age.-Dr Ruth Westheimer's Encyclopedia of Sex http://www.sexuality-encyclopedia.com/dr-ruth/Sperm
"A man's testicles begin to manufacture sperm at the time of puberty and produce 50,000 sperm per minute, every minute of every hour, well into old age.-Dr Ruth Westheimer's Encyclopedia of Sex http://www.sexuality-encyclopedia.com/dr-ruth/Sperm