What are heart rate increases?

Your heart rate is how many times your heart beats in one minute. When it goes up, that’s a heart rate increase.

Imagine you're playing tag with your friends. At first, you’re just standing there, breathing easy. But when someone yells “Tag!” and you start running, your legs go faster, your lungs work harder, and boom, your heart has to beat quicker to send more blood to your muscles so you can keep moving.

That’s a heart rate increase in action! It happens when your body needs more energy, like when you’re running, jumping, or even just laughing really hard. Your heart is like a little pump inside your chest, and it works harder to make sure your whole body gets enough fuel to keep going.

Your heart beats faster because of something called exercise, or any activity that makes you move more than usual. It’s like when you push a heavy toy car: the harder you push, the faster it goes. Your heart is doing the same thing, pushing blood through your body so you can keep playing!

So next time you feel your heart thumping after a game of hide-and-seek, remember: that's just your heart working hard to help you have fun!