Data from: A relationship between attractiveness and performance in professional cyclists

Females often prefer to mate with high quality males, and one aspect of
quality is physical performance. Although a preference for physically
fitter males is therefore predicted, the relationship between
attractiveness and performance has rarely been quantified. Here, I test
for such a relationship in humans and ask whether variation in (endurance)
performance is associated with variation in facial attractiveness within
elite professional cyclists that finished the 2012 Tour de France. I show
that riders that performed better were more attractive, and that this
preference was strongest in women not using a hormonal contraceptive.
Thereby, I show that, within this preselected but relatively homogeneous
sample of the male population, facial attractiveness signals endurance
performance. Provided that there is a relationship between
performance-mediated attractiveness and reproductive success, this
suggests that human endurance capacity has been subject to sexual
selection in our evolutionary past.