Why Do We Shiver


When you are out in a cold environment, you start feeling shivers after some time. You may also feel the same after taking certain medicines and treatments. However, the reason behind your feeling of these shivers is your nervous system and reflexes. Basically, it is your nervous system that keeps you safe and maintains your health by controlling your reflexes. Your nervous system includes your brain, spinal cord and nerves. These nerves carry all kinds of information to your brain so it can decide to take the right action.

When you experience a colder environment in which the outside temperature is much lower than your normal body temperature, your nerves take immediate action to send signals to your brain that your body is at a dangerous temperature and needs to be warmer. This helps your brain control the action of your body muscles. Your muscles start a faster action of tightening and loosening repeatedly. This makes the body temperature higher so you start feeling warmer. Thus, a difference in your body temperature and outside temperature is balanced by the action of your nervous system. It stops the shivering that you experience due to a sudden shift in temperature.

Although lower temperature majorly causes you to shiver, you may also experience shivers when you are badly scared of something or feel quite excited about something. In all such cases, your nerves become the regulator of your body temperature and stop your shivers. Your nerves indicate your body’s condition to the spinal cord and brain. After this, your muscle action starts to warm you up. You may have felt this muscle action through Goosebumps. Thus, you now know how to react to these Goosebumps when you are going to swim in cold water or when you are going for a bike ride in winter.