Short version
Blood pressure is something health workers check to see how well red stuff called blood moves around our body.
Health workers check to see how fast or how strong our blood flows.
Long version
To stay healthy our body needs to move red stuff called blood around inside us.
How well the blood moves around inside is important.
Blood carries things our bodies need to different parts of our body.
Health workers measure how well our body moves blood around inside us by checking something called blood pressure.
