Everest's Awkward High Altitude Boners

Many men who climb Everest get weird boners because the extreme altitude and air pressure differences change how blood flows through their bodies, including into the penis. As climbers ascend into thinner air, low oxygen and shifting pressure can alter circulation and blood vessel behavior. In some men, that combination sends extra blood into erectile tissue at unexpected times. The result is a distinctly unglamorous side effect of high-altitude mountaineering.

Previous Fact Next Fact