The main scientific theory explaining why we find certain traits attractive is that they showcase genuine advantages (study, study, study). For example, the healthiest body-fat percentage range for men is between 10–20% (study), so we’d expect that amount of fat to be considered the most attractive by women. That’s not what we see on magazine covers, though, where men are typically far leaner.
Do women really find men with the healthiest body-fat percentage the most attractive? Or do they have a preference for even leaner men with more chiseled abs?