Another fantastic quote from Bonk, a book about sex research by science writer Mary Roach, this time about the effects of distraction on female sexual arousal (from p251):
A thousand images can play on a woman's mind: work, kids, problems with Ultrasuede. One nonpharmaceutical solution is to teach women to redirect their focus and pay more attention to physical sensations - a practice called mindfulness.
If it's any solace, even female rats have trouble focusing. I give you a sentence, my favourite sentence in the entire oeuvre of Alfred Kinsey, from Sexual Behaviour in the Human Female: "Cheese crumbs spread in front of a copulating pair of rats may distract the female, but not the male".