Why does the body tremble when it feels cold? Can't help it?

When it is cold, people's somatosensory temperature drops, blood circulation slows down, blood pressure also drops, and body muscles contract, so people will feel shivering after being cold for a long time!

Because our body has its own reaction mechanism to protect itself, for example, in hot summer, because the weather temperature is relatively high, our body will automatically sweat, so in cold weather, the temperature is relatively low. In order to protect the important area of our body at about 37 degrees, our body will automatically adjust the energy we need in our body to ensure the heat in our body, and correspondingly reduce the heat that our body emits to the environment, so that our body will tremble.

People tremble when they catch a cold because the internal environment of the human body controls and regulates the body. The regulation of body temperature mainly depends on the control of hypothalamus, which is located at the end of the brain and has tiny brain tissue to control body temperature. Sweating of the human body is also controlled by this part. Trembling is because the hypothalamus is a way to help the body keep a constant temperature. When the body gets cold, the brain sends information to the hypothalamus to control the body, tremble, release energy and warm the body.

This is a natural physiological reaction of human beings. When people encounter a cold environment, skeletal muscles contract to generate a lot of heat and provide the energy needed by the body. Sometimes a fever can also cause chills, so chills are a protective action of the human body. Don't be too nervous. Keep warm, and you won't have this symptom. Because of the chills, people have to generate more heat than usual to keep the temperature balance. People can generate heat by shivering. ?

Trembling with cold is because the skin temperature receptors are stimulated, and through the introduction of nerve impulses, the motor neurons that dominate muscles are directly excited in the spinal cord, causing muscles to contract and tremble. That's the body's response to self-protection.