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Muscles enable the heart to beat, the chest to rise and fall during breathing, and blood vessels to help regulate the pressure and flow of blood through the body. When we smile and talk, muscles help us communicate, and when we exercise, they help us stay physically fit and healthy.
Protein is a vital part of our bodies. The most obvious proteins most of us would recognize are our muscles. Muscle tissue consists of two proteins, actin and myosin, that interact with each other to make muscle a tissue which contracts or shortens. Muscles attached to bone allow us to move.rotein is a vital part of our bodies. The most obvious proteins most of us would recognize are our muscles. Muscle tissue consists of two proteins, actin and myosin, that interact with each other to make muscle a tissue which contracts or shortens. Muscles attached to bone allow us to move.