Photo: Tim Douglas

Why are men naturally hot?

At the same time, male sex hormones like testosterone might desensitize one of the main cold receptors in the skin, research reveals, making men feel ever warmer. Men have a metabolic rate that's about 23 percent higher than women's, which means they burn calories and heat up their bodies faster, on average.

fatherly.com - Why Women Are Colder Than Men: Science Explains - Fatherly

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Your wife is (probably) not shivering to be dramatic, asking for your coat to look fashionable, or messing with the thermostat to pick a fight. Studies suggest women legitimately feel colder than men, on average, for a combination of physiological, hormonal, and psychological reasons.

Here’s what the science has to say about your freezing-cold wife:

She Has Less Blood in Her Extremities

When you get cold, the blood vessels in your hands and feet constrict to redirect blood flow (and heat) toward the center of your body, keeping your most vital organs toasty. Since women tend to have less blood to begin with, this redirection happens faster and leaves their fingers and toes particularly cold. Indeed, studies suggest women conserve more heat than men overall — at the cost of their frozen hands and feet, which are 2.8 degrees Fahrenheit colder than men’s, on average.

She’s Warm on the Inside, but Cold on the Outside

While it’s true that women run hotter than men when it comes to their core temperatures, researchers have argued that skin temperature may be a more effective way to measure cold sensitivity than core temperature. And, as it turns out, women have lower skin temperatures than men, on average.

You Have Important Hormonal Differences

Estrogen can slow blood flow to the hands and feet, and raise women’s core temperatures, making them more sensitive to temperature drops, especially during menstruation. Hormonal birth control can make this even worse. At the same time, male sex hormones like testosterone might desensitize one of the main cold receptors in the skin, research reveals, making men feel ever warmer.

She’s Not as Buff as You

Men have a metabolic rate that’s about 23 percent higher than women’s, which means they burn calories and heat up their bodies faster, on average. And while it’s true that women have larger fat stores (which presumably add some warmth) fat is not nearly as good at keeping us warm as muscle.

And, you guessed it — men have more muscle mass too.

All of Her Friends Are Cold

If a woman is cold, her gal pals are probably cold, not just because of their shared biology or flimsy coats, but because of something social scientists call “cold contagion.” One study found that people’s hand temperatures dropped significantly after they viewed videos of hands being submerged in cold water, indicating that the perception of chilliness can be spread socially. So even if her body isn’t making her cold, her mind is. Either way, be a gentleman. Just hand her your coat.

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Which country has tallest girls?

The Netherlands is renowned for its tall population and unsurprisingly the nation has the tallest average height on Earth. The average 19-year-old man stands at 183 cm, while women of the same age are typically 172 cm.

newseu.cgtn.com - The tallest and shortest nations in the world - CGTN - Europe

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A new study published by The Lancet medical journal has revealed the tallest and shortest peoples and the places that continue to grow in height. An exhaustive research project has compared the height of men and women across 200 countries and territories across the world. The study pooled 2,181 population-based measurement surveys and studies, with anthropometric measurements on 50 million people aged 5–19 years and 15 million people aged 20–30 years. The results revealed that the world's tallest men and women were largely found in northwestern and Central European countries, while the shortest lived across south and South East Asia, Latin America and East Africa. The Netherlands is renowned for its tall population and unsurprisingly the nation has the tallest average height on Earth. The average 19-year-old man stands at 183 cm, while women of the same age are typically 172 cm. Estonia (180cm), Bosnia and Herzegovina (179 cm) and Montenegro (172 cm) were the next tallest nations for men, along with Denmark (165 cm), Iceland (163cm) and Montenegro (161 cm) for women. The study also revealed that the places with the shortest average height for men were Laos (159 cm), Timor-Leste (160 cm), Papua New Guinea (161 cm) and the Solomon Islands (162 cm). Meanwhile, the equivalent figures for women were Bangladesh (150 cm), Timor-Leste (150 cm), Guatemala (150.9) and Nepal (151 cm). Some nations are continuing to grow in height. China has boasted the largest height gain for boys and third largest for girls in recent decades, while South Korea has the third largest growth rate for boys and second largest for girls in the same period.

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