Goosebumps occur when the arrector pili muscles cause the hairs to stand up, making the skin look bumpy. A person may notice goosebumps on the arms, legs, or trunk. When the hairs stand up on the skin ...
Have you ever felt a chill or heard an emotional song that made tiny bumps rise on your skin? These are goosebumps—small, involuntary skin reactions that most of us experience during cold weather, ...
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