How Your Muscles Work

Your body has many muscles. They help you move all day. Muscles are strong parts under your skin. Try to bend your arm. Feel the muscle in your upper arm get hard. That muscle is working! Muscles work by pulling. They do not push. When a muscle pulls, it gets shorter. This makes your bones move. Many muscles work in pairs. One muscle pulls a part of your body one way. Then another muscle pulls it back. Think about walking. Your leg muscles pull to lift your foot. Then other muscles pull to put it down. This happens very fast! All your muscles work together. They help you run, jump, smile, and even blink. You use muscles for almost everything you do!

Questions

1.What is the most important message the passage teaches you about muscles?
- Muscles are the strongest parts of your body.
- Muscles help you bend your arm.
- Your muscles work hard to help you do almost everything.
- Muscles always work in pairs to move bones.
2.When a muscle pulls, what happens next that makes your body move?
- It gets shorter.
- It pushes your bones.
- It gets longer.
- It makes you blink.
3.How does the passage mainly help you understand what muscles are and what they do?
- It compares muscles to bones and other body parts.
- It tells a story about a boy named Tom using his muscles.
- It describes how muscles work and gives examples of what they do.
- It tells the steps of how to build strong muscles.