Smart men display muscular frames yet steer toward monogamy, study finds

In a study of young men, higher fluid intelligence measured by Raven's matrices correlated with stronger grip strength and a more masculine shoulder-to-hip shape, while top scorers reported fewer casual sexual partners. The researchers interpret these links as part of a broader 'fitness' trait cluster—intelligence, physical health/strength, and mating strategy—potentially signaling more monogamous tendencies. However, the study’s small, regionally limited sample (41 men in the main analysis) calls for replication before drawing wide conclusions about intelligence and dating behavior.