This whole article is great. (via)

The largest degree of satisfaction can be found in girls under the age of 16. “They see dance as something fun, not as part of mating behavior,” says Lovatt. That changes around the age of 16. “Between 16 and 20, dance confidence among girls falls markedly,” says Lovatt. “Girls begin to see dance as a social act rather than a way of expressing themselves. They begin to worry about how they look and start searching for a boyfriend.”

But once young women have come to terms with their lost dancing innocence, the satisfaction ratings start rising again. From the age of 20 onwards, their opinion of their own dance floor competence starts to improve and keeps increasing until the age of 35. After that it hits a plateau, however, as satisfaction levels stagnate. From 55 onwards, the value even drops. “That coincides with the menopause,” says Lovatt. And it doesn’t get any better: “Dance confidence remains low for the rest of a woman’s life.”

The pattern is somewhat different among men. Their dance confidence levels keep rising until the mid 30s. It then stagnates before starting to sink from the age of 55 onwards. But then, surprisingly, men get a second wind. From 65 on, they start to once again see themselves as pretty smooth operators on the dance floor.

Sexual Politics of Dancing: The Secrets of Looking Good on the Dance Floor