結果 : why does your heart beat faster when you exercise kids
3:36

How to Feel Your Heart Beat

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HOTS | Respiration In Organisms | Heart Beats Faster During Exercise Or while Running

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KSPS Fit Kids: Exercise Your Heart

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What Happens to your Heart when you Exercise - The Human Body - A User's Guide

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Do You Have a Maximum Heart Rate?

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Christian Workout | strength & cardio

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Does your heart beat faster when you exercise?

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What can I do if my heart is beating too fast?

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How does your heart know when to beat faster?

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The Human Heart for Kids | Educational video to learn all about how the heart works

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What causes heart attacks? | #aumsum #kids #science #education #children

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What if You Hold Your Breath for Too Long? | Breathing Mechanism in Human Beings | Dr. Binocs Show

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Heart 101 | National Geographic

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Kids Ask Why Channel
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What is a normal heart rate?

Mount Sinai Health System
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