Episode 3: Why is sex fun?
Sexual pleasure is among the most prized, most meaningful and richest experiences known to man. But the orgasm is a true scientific puzzle. In men, it helps expel sperm. But in women, its role is unknown. Some feel it's just a "bonus" but others think that it may help play a role in conception. Maggie Gyllenhaal hosts this revealing investigation -- a true scientific first.
ALSO FROM THIS EPISODE
We like to think we're in control of how we express our emotions, but much of our nonverbal communication is done unconsciously, and it's a language all humans understand. So how do we use nonverbal signals to communicate and interpret emotions?