Season 1 Episodes17
Cast1

Morgan Freeman
Self - Narrator (voice)
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Ranked #5 of 16 in Season 1•+0.6 vs season avg
Maggie Gyllenhaal hosts a revealing investigation into the mechanics and chemistry of female orgasm.

Morgan Freeman
Self - Narrator (voice)
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"Why is Sex Fun?" is episode 3 of Curiosity season 1. It scored 7.2/10 from 58 votes, ranking #5 of 16 episodes this season (season average 6.6). It aired on August 21, 2011.