Chicken

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The human body is a complex and intricate machine that is capable of performing an incredible number of functions. It has over 60 trillion cells, each one working together to keep us alive and functioning properly. The heart pumps blood throughout the body, delivering oxygen and nutrients to every cell, while the lungs breathe in air and expel carbon dioxide. The brain controls all of our movements, thoughts, and emotions, sending signals to the rest of the body to perform various tasks. The immune system protects us from harm by fighting off germs and diseases. Even the skin, which is often overlooked, plays a vital role in regulating body temperature and protecting us from external damage.