What is the main function of muscles?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Muscles**: Muscles are specialized tissues in the body that have the ability to contract and relax.

2. **Primary Function**: The main function of muscles is to facilitate movement. This includes both voluntary movements (like walking or running) and involuntary movements (like the beating of the heart).

3. **Mechanism of Movement**: When muscles contract, they pull on bones or other structures, resulting in the movement of various body parts. This contraction is what enables us to perform different physical activities.

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