New research uncovers how evolution and improved living conditions are accelerating men's growth more than women's.

With bloated bellies and hairy legs, female flies try to look bigger to get food from courting mates. But male flies, in turn ...

The study was published in the scientific journal Evolution and Human Behavior ... A stock photo shows a woman and a man flexing their arm muscles in the gym after a workout.

Ultimately, more studies involving women would be needed to uncover more evidence for the reasons behind this connection as well as a better understanding of human evolution in general.