When stressed, you tend to breathe shallowly, using movements that involve only the upper part of your rib cage.

Shy people often breathe shallowly.

Most people who breathe shallowly do it throughout the day and are almost always unaware of the condition.

Surprisingly she was still alive and breathing shallowly.

The tunnel made from the remains of her throat still expands and contracts, as if something immense was breathing shallowly.