Viagra isn't the only drug being prescribed off-label for women with arousal problems. Los Angeles urologist Jennifer Berman told me some doctors are prescribing low doses of Ritalin. Drugs like Ritalin improve a person's focus, so it stands to reason that it would make it easier to stay attuned to subtle changes taking place in one's body. 'It enables a woman to focus o the task at hand,' said Berman, managing, though surely not intending, to make sex sound like homework.

Bonk: The Curious Coupling of Science and Sex