Your lungs will not work as well when you are around a trigger.

It's safe to say that both men's lungs worked overtime this week.

This is the best way to know how well your lungs are working.

At this level, the lungs are not working well at all.

Difficulty breathing can occur when a child's lungs or heart are not working well.

He took several deep breaths, trying to see if his lungs were working properly.

It is a quick and easy device to measure how well the lungs are working.

Already he was aware that his lungs were working harder.

In its advanced stage, cancer may affect how your lungs work.

This time we flew far, and higher than before, so high indeed that my lungs worked hard for breath.