So, it’s not too surprising that the explanation lies in evolution. That’s exactly what the Zoology Department at Tel Aviv University explored. Their scientists uncovered why women prefer warmth while men lean toward cooler temperatures.
Researchers found there’s an inbuilt evolutionary difference in how males and females sense temperature. This mainly ties back to reproduction and caring for offspring.
They studied how this plays out in birds and bats. Earlier observations showed that outside breeding seasons, bats separate by sex, with males moving to cooler areas—you probably guessed it, the males head to chillier spots.
Similar patterns appear in birds and mammals: males usually seek cooler zones, while females stay warmer with their young. Even in species where sexes live together, males often rest in the shade while females soak up the sun. Across the animal kingdom, males and females clearly relate differently to temperature.
Why Focus on Bats and Birds?
Over recent decades, scientists observed thousands of birds and bats to find answers. These animals were chosen because of their mobility and, especially in migratory birds, their fascinating habits. Researchers believed studying them would clearly reveal how males and females differ in temperature preferences.
What Did the Experts Discover?
Dr. Magory Cohen, lead author of the study, explains the whole process aims to keep offspring safe. Evolution nudges males, who tolerate cooler temps better, toward colder areas, while females stay in warmer climates. This reduces competition for resources and prevents potentially aggressive males from endangering the young.
What About Humans?
“The difference in temperature sensitivity isn’t meant to spark arguments over the thermostat with our partners. Quite the opposite—it helps everyone enjoy peace and quiet, allowing occasional space without needing a reason.”
Interestingly, researchers found that in humans, this separation links clearly to various social behaviors. For example, when men and women share a space, women tend to be more open to physical contact with other women, while men keep more distance—both mentally and physically. And we know that the closer we are to someone, the more warmth we share and retain.
“Males and females, men and women, have different temperature sensing mechanisms shaped by evolution. This difference is similar to how pain thresholds vary between sexes and is also influenced by hormonal differences,” summarized Dr. Levin.
So next time you argue about how high to set the thermostat or how cold the AC should blow, it might be smarter to spend some time apart instead of fighting—at least, that’s the long-term advice from the experts.
