 The way your immune system keeps you safe: It's pretty clear from the name that most people know what the immune system does. It helps your body fight off sickness by making different parts of your body less susceptible to illness or diseases. Being aware of what your immune system does is important, but this piece will go one step further and explain how it does it. Most people don't really understand how their immune system keeps them safe from viruses. It is very important for you to know this so that you can understand how you react to getting sick and what your immune system needs to keep protecting you. There will be a fever in your body: A fever is often a way for your immune system to protect you. You might think that having a fever is bad, but a mild fever can actually help you a lot. Your body will first try to get rid of the virus by raising its temperature. This is because the virus can't live in hot places. You should keep an eye on your temperature to make sure it doesn't get too high because this process can be very dangerous for you. White Blood Cells are sent back: When your immune system finds something strange in your body, it will send white blood cells to fight it. You can think of white blood cells as your police officers. Their job is to kill any dangerous micro-organisms they find. It is possible for some of your white blood cells to connect to these harmful organisms and try to weaken them. Some cells will go after the dangerous organisms directly to try to kill them. The best part is that the white blood cells will learn about the germs they killed, which will make you less vulnerable to them in the future. It's part of your immune system to have inflammation: People often feel pain and swelling in certain parts of their bodies when they are sick, which is clearly not fun. As everyone knows, inflammation is not fun. But because it is a part of your immune system, it could mean that you have an infection.
If you get bad germs into your body, they will use your blood vessels to get to other parts of your body and spread. Your immune system can swell up some parts of your body, which narrows the blood vessels there and makes it harder for bacteria to spread to other parts of your body. As soon as your white blood cells notice this swelling, they will start working right away to get rid of the bad germs. You may find that many of the things your body does when it's sick are painful, annoying, or even gross. But these are all ways that your immune system protects you and helps you feel better as quickly as possible. To keep your immune system working well, you must do everything possible to take care of it.
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