Working out at the gym may stimulate your appetite—or maybe it's the enticing scent of the person next to you. Sweaty men smell of cheese, and sweaty women smell like onion or grapefruit, New Scientist reports. Body chemistry accounts for the difference, say Swiss researchers who based their conclusions on armpit sweat samples from 50 people who had sat in a sauna or ridden an exercise bike.
The findings may differ in other parts of the world depending on numerous variables. "Other factors include what you eat, what you wash with, what you wear and what genes you inherit," said a researcher. (Read more gender stories.)