National Geographic: Sex - How It Works
It gives us pleasure, it gives us pain and it gives us life. But how much do you know about how sex works? National Geographic takes a fascinating look at one of the world's most popular pastimes.
Through gripping real-life stories, new technology and cutting edge computer graphics we explore sex like never before, journeying from first times to playing the field - all the way to humankind's ultimate goal, procreation.