Why Does Your Heart Beat Faster When You Run?

 

Why Does Your Heart Beat Faster When You Run? 🏃‍♀️💓

Let’s chase the science behind your racing heartbeat – by StudiesSprouts

Ever noticed how your heart starts thumping like a drum when you run or jump? Let’s uncover what’s really going on inside your body during all that action!

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💡 What Is Your Heart, Anyway?

• Your heart is a muscle, about the size of your fist.

• It’s a pump that pushes blood around your body.

• It beats about 60–100 times a minute when you’re resting.

• That’s around 100,000 times a day! 😲

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🩸 What Does Blood Carry?

• Oxygen from your lungs

• Nutrients from your food

• And it picks up waste to get rid of it!

So, your heart is like a delivery truck and a garbage truck in one!

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🏃‍♂️ So Why Does It Beat Faster When You Exercise?

When you run, your muscles need more:

• Oxygen

• Energy

• And quick waste removal (like carbon dioxide)

Your heart speeds up to deliver all that faster!

🧠 Bonus: Your brain also tells your heart to pump faster when it senses physical effort or excitement.

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🚀 What Happens Next?

• Your breathing increases to bring in more oxygen

• Your blood vessels expand to let blood flow faster

• You might get sweaty – that’s your body’s cooling system!

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🧠 Sprout Fun Fact:

The fastest recorded heartbeat is over 200 beats per minute – that’s more than 3 times a second!

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🌱 Try It Yourself:

1. Sit still and count your heartbeat for 15 seconds. Multiply by 4 – that’s your resting rate.

2. Now do 20 jumping jacks, then count again.

3. See the difference! Write it down in your science journal.

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Would you like the next blog to explain how breathing works, or go inside the amazing brain?