Your body is special - no two people in the world are alike , Although you are different from everyone else , you have exactly the same body parts as the people around you , doing different jobs that keep all of us alive . What is inside my head ? Your head _ the most valuable part of your body - your brain . As you are reading , your eyes send pictures to your brain which makes meaning from what you see . Your brain helps you to remember and think , and makes sure your body is doing what it should . What is my skin  for ? Your skin covers your body . In most parts of your body , the skin is just as thick as half a centimeter . If you have your skin cut , it will have a quick cure and stop viruses from getting into your body . Your skin also helps you feel the heat and coldness of the environment around you . Hair grows from inside the skin . When you feel hot , extra heat comes out through your skin . As a result , your body temperature drops . How do I move ? Muscles  are found in most parts of your body . They work with your bones to help you move - whenever you cry or smile , eat or speak , walk or dance , etc . Why do I breathe ? Your body needs to take in oxygen from the air and give out the unwanted carbon dioxide in the body . When you breathe , air comes through your nose and mouth into your lungs  where oxygen flows to different parts of your body . What makes me sneeze ? When dust or a strong smell gets into your nose , you sneeze . This is the way your body cleans up the dust in your nose . Your lungs push out the air and try to clear your nose . What does my heart do ? Your heart is a very special muscle . It is slightly bigger than your fist   and grows bigger as you do . If you place your hand on your heart , you will feel your heart beating which forces blood to move around your body . If you have no skin covering your body , what would happen ?
Extra heat can only stay inside our body . Viruses can't get into our body easily . We can't feel the changes in temperature . Our body can be guarded by our hair .