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Book 28, Question 87 · Video

Why are kids careful with heavy weights?

Video · 1:46 · Crafty Clover explains, from A Million Whys Book 28

Growing bones have soft areas near their ends called growth plates, where new bone is made. These areas are weaker than the bones around them. Lifting very heavy loads or twisting under pressure could hurt them. Kids can build strength safely with their own body weight, such as push-ups, squats, and climbing, under a grown-up's supervision.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why are kids careful with heavy weights?

The Big Idea

Lifting super heavy weights isn't for kids. Why not? It's about growing bones.

Growth Plates

Step one: Growth Plates. Growing bones have soft areas near their ends called growth plates, where new bone is made. These areas are weaker than the bones around them.

Risky Loads

Step two: Risky Loads. Lifting very heavy loads or twisting under pressure could hurt growth plates. That's why kids should be careful.

Safe Strength

Step three: Safe Strength. Kids can build strength safely with their own body weight, such as push-ups, squats, and climbing. It's best done under a grown-up's supervision.

A Closer Look

Let's take a closer look! Arms and chest. Legs. Whole body. Stay safe.

Quick Facts

Quick facts! Growth plates harden into solid bone when you finish growing. Growth plates make bone. Avoid very heavy loads. Body weight is great.

Think Like a Scientist

Now, think like a scientist! Try wall push-ups using only body weight. Try squats too. Focus on good form. Count how many you can do. Ask a grown-up to watch.

Outro

Kids are careful with heavy weights because growing bones have soft growth plates near their ends that could be hurt. Kids can build strength safely with body-weight moves like push-ups, squats, and climbing. Strong and safe! Build up slowly. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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