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A little wonder, every day

Goosebumps raise human hairs

Справжня гусяча шкіра на людській руці; не кадр мишачого досліду стовбурових клітин / Actual goosebumps on a human arm; not the mouse stem-cell experiment. Credit: Ildar Sagdejev ( Specious ); CC BY-SA 3.0. https://creativecommons.org/licenses/by-sa/3.0 Source: https://commons.wikimedia.org/?curid=4277167

Справжня гусяча шкіра на людській руці; не кадр мишачого досліду стовбурових клітин / Actual goosebumps on a human arm; not the mouse stem-cell experiment. Credit: Ildar Sagdejev ( Specious ); CC BY-SA 3.0. https://creativecommons.org/licenses/by-sa/3.0 Source: https://commons.wikimedia.org/?curid=4277167

Listen to fact0:00 / —

Goosebumps occur when small muscles beside hair follicles contract and raise hairs. Humans retain body hair, although it is much sparser than many mammals’ thick fur. In furry animals, raised hairs can improve insulation. Thus “modern humans have no hair” is false: the mechanism persists even when its insulating effect is limited.