Intelligence in young men is positively linked to physical traits like grip strength and a masculine body shape. Higher intelligence is also associated with less promiscuous sexual behavior. Cognitive ability and physical health may reflect fitness, steering smarter men toward monogamy.

Intelligence in young men is positively linked to physical traits like grip strength and a masculine body shape. Higher intelligence is also associated with less promiscuous sexual behavior. Cognitive ability and physical health may reflect fitness, steering smarter men toward monogamy.