The female seems to control the mating encounter.

It wasn't just that they wanted to be around them. It seemed to be particularly relevant to the sexual interaction, the stimulation they would receive.

My caution in terms of directly applying the caffeine or the coffee before sex to enhance your sexual drive or motivation would be that in this experiment, we gave only one dose of caffeine to animals who had never had caffeine before.

There are a lot of women out there with sexual dysfunction, and if they understood how that happens or how we can augment that, that would be a helpful thing.

The way we measure their interest is they go back and revisit the male after they've just had some sexual interaction with them.

I ran upstairs, loving, weeping. I will run downstairs, unloving, not weeping.