ㅇ (1) 썸네일형 리스트형 Why do you shiver when you're cold?(추울 때 왜 몸을 떨까?) When you are cold, you body just starts to shiver. What is the reason that our bodies do so? When your body's temperature starts to drop, the brain orders muscles all around your body to repeat contraction and relaxation. Contraction is when a muscle tightens, and relaxation is the opposite. When muscles contract and relax, they produce heat. The brain orders the body to shiver to get this heat... 이전 1 다음
