Science: Why do you feel good when you do sports?

Drag and drop the following words into the correct place in the text.

blood

brain

body

make

beating

Before you read this article, jump up and down ten times. Do you feel your heart _________ faster?

When your heart beats faster, your _________ thinks you are in danger from an enemy. So, it sends a protein called brain-derived neurotrophic factor (BDNF) into your _________. This protein helps to repair your brain and _________. You will also get endorphins, which block pain and _________ you feel happy.

If you want to feel good – do some exercise. It’s good for your body and you will feel great.