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Answer:
Muscles play a part in everything you do.
Step-by-step explanation:
They control your heartbeat and breathing, help digestion, and allow movement. Muscles, like the rest of your body, thrive when you exercise and eat healthily.
The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.