A muscle beneath the upper layer of skin called the hair erector muscle contracts. When doing so it causes the hairs to stand up and this creates an insulation layer by trapping warm air, which also helps maintain a constant internal temperature.
whales keep warm by their blubber! good question
No seals dont have hairs to keep them them warn
No
We are descended from apes who have fur to keep them warm.
Hairs allow you to feel and is you have enough they can keep the sun off you or keep your warm. They can also be used as part of your sexual display.
Hairs on nostril and ears act as filters to trap dust . On the skin and body it helps to keep the body warm.
Polar Bears have thick coats to keep them warm.
Goosebumps help keep you warm by causing your hairs to stand up, creating a layer of insulation that traps heat close to your body.
a penguin keeps warm with its blubber
to keep their arms warm and loose so they don't cramp or get cold
Keep warm, and try not to become frightened.
To keep your arms warm, you can wear layers such as long-sleeve shirts or thermal tops under your outerwear. Additionally, using gloves or mittens helps retain heat in your hands, which can also warm up your arms. Heating pads or warm blankets can provide extra warmth, especially when sitting still. Staying active by moving your arms can also help generate body heat.