Why do you shiver when you feel cold?

It also causes shivering in the extremities when it gets too cold, and some have a shivering beard and chattering of teeth. Our body maintains its temperature with the surrounding weather and the environment should also be suitable to keep the body at the required temperature. When the temperature of the environment increases or decreases, the body reacts to maintain its equilibrium temperature. Heat is maintained by sweating in summer. When in the cold, the muscles of the body start shivering to gain heat. Shivering in extreme cold is the body's response to gain heat.