For example:
when we go outside our face is almost always uncovered until tge temperatures get way below freezing point. It’s also almost always uncovered when we sleep, eventhough the toom might be cold.
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Our heads receive the most blood supply then it’s our internal organs then everything else when we are cold.
Our faces stay warmer due to this increase of blood flowing, it’s part of the reason our cheeks get redder if you have paler skin.
Our hands can get extremely cold before cell damage starts to occur. There’s not a lot of things that need blood to be pumped into our hands unless you are using them like we tend to do often.
The more you use your hands the bigger dilated your blood vessels in your hands are so they don’t restrict as much when exposed to a cold environment. There’s muscles that are around these blood vessels that do the shrinking and expanding. Think of construction workers who barely have gloves on in near freezing weather.
If you are skinner you are less cold resistant and more heat resistant and vice versa if you are heavier in weight.
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