Remember your lungs? Those special machines that help you breathe.

They have branches like a tree that bring in good air and push out the bad.
Sometimes, sneaky germs (bacteria, viruses, or fungi) can get inside the lungs. They cause swelling and fill the lungs with liquid. That’s called pneumonia.

Pneumonia makes breathing hard because the lungs are full of liquid.

It’s like when it rains too much and a tree’s branches get heavy with water…they droop and can’t hold the weight.