5G16

= Human body = You can keep the muscles healthy by exercising a lot and eating fruits and vegetables. You can try __NOT__ to eat junk food. The muscels need protein wich you can get from meat, egg, cheese and milk.

Red blood cells have the important job of carrying oxygen around the body. They also contain a protein called hemoglobin. Hemoglobin contains iron which combines with oxygen to give hemoglobin and our blood, a red color.  White blood cells defend against certain bacteria, viruses, cancer cells, infectious diseases and other unwanted materials. The brain is the center of the nervous system.It can control our thoughts, memories, movements, decisions, etc.

**Respiratory system**
The Respiratory system helps us to breath in oxygen and breath out carbon dioxide.Did you know that the right lung is larger than the left lung? Why is that? Well,the left lung is divided into two parts and the right is divided into three parts! When we breath in our diaphragm pulls down filling our lungs with air and providing us to breath.

=Tip # 1:DO __NOT__ SMOKE!!= =Tip # 2:Eat lots of fruits and vegetables= =Tip # 3:Exercise a lot= = =

= Tip # 1:DO NOT SMOKE!!!!! = Smoking can affect your health and it produces lethal diseases like Cancer and heart diseases, plus it can affect your respiratory system and your muscular system because when you smoke you can hurt your lungs and your heart each time you smoke. It can also make it more difficult for your blood to move around your body. Also it can affect your muscles because they don't receive enough oxygen. Plus it reduces the length and quality of your life. You don´t only harm yourself when you smoke, you also harm the people around you. About 50 million Americans smoke cigarettes. About 1/3 of the adults around the world smoke, that is more then 1 billion people. Every single day about 3,900 kids between the ages 12 and 17 start smoking. Many people start smoking because they think it is a grown up thing to do. If you start smoking you become addicted. When you are addicted to something it is very hard to quit even if you want to. So don't try smoking!!!!! It is for your own good!!!

= Tip # 2:Eat lots of fruits and vegetables = = If you want to keep you body healthy you need to eat lots of fruits and vegetables. They contain vitamins and minerals that our body needs for functioning well. They are the fuel our body needs. If you eat lots of fruits and vegetables you will grow to be very healthy and strong. Also the digestive system works better when we eat them. It is better to eat food that come from nature, not processed foods. Fruits and vegetables are better snacks than cookies or chocolate because these are empty calories, that means that you get calories NOT nutrition and you could gain weight. =

= Tip # 3:Exercise a lot = Exercising is very good for the circulatory system because i t helps the heart become stronger. The heart is a muscle and if we exercise it it will last longer and in better shape. People that have a strong heart have more energy and don't get tired easily. If the heart works well it can carry oxygen to all our organs so they can function better. Exercising is also good for the muscular system in our body. Muscles grow by exercise and they can hold our body straight. Exercising is relaxing and fun because it helps to relieve stress. There are so many different ways of exercising that it is easy to find something fun for everyone.