Why do we get a fever when we are sick?

Your body has a special system that protects you from illness. This system is called the immune system. Its job is to find and fight harmful germs such as viruses and bacteria. When germs enter your body, your immune system quickly detects them and starts to respond.

One of the ways your body fights these germs is by raising its temperature. This increase in body temperature is called a fever. Most germs grow best at normal body temperature. When your body becomes hotter, it becomes harder for these germs to survive and multiply.

At the same time, your immune system becomes more active and works more efficiently in higher temperatures. This means your body can fight the infection more effectively. That is why a fever is often a sign that your body is defending itself.

However, a fever can also make you feel uncomfortable. You may feel warm, tired, or weak. Some people may also have headaches or body aches. These feelings happen because your body is using a lot of energy to fight the infection.

Doctors sometimes give medicines like Paracetamol to help lower the fever and make the body feel more comfortable. These medicines do not kill the germs directly, but they help reduce the temperature and ease the discomfort while your body continues to fight the infection.

Drinking enough water is also very important. When your body has a fever, it loses more fluids than usual. Water helps to cool your body, keep your blood flowing well, and support your immune system as it fights the germs. Rest is another important part of recovery. When you rest, your body can focus its energy on fighting the infection.

Once the germs are defeated, your body temperature slowly returns to normal. A fever may not feel good, but it shows that your body knows how to protect you.