By;happypopcorn # stay healty!
The lungs works by oxygen and that oxygen we breath in helps the red blood cells.
The red blood cells carries the oxygen through your body.
One of the best choice is no to smoking.
If your smoke you have 99% chance to get COPD.
It can even cause lung cancer.
How to stay healthy
.wash your hands
.brush your teeth twice
try to avoid getting sick staying healthy is the best choice