breathing

Her breathing became slow and heavy.

For one dreadful moment I thought his breathing had stopped.

I installed a breathing apparatus in your helmet.

It is known that they had lungs as well as gills for breathing.

Gills were undoubtedly the main source of oxygen for these fish, but the lungs served as an auxiliary breathing device for gulping air when the water became oxygen depleted, such as during extended periods of drought.

Furthermore, they already had lungs, which rhipidistians presumably used for auxiliary breathing.

So just by breathing you could say we are all guilty of carbon emission and contribute to the amount of carbon in the atmosphere.

Movements of the rib cage for breathing are reduced during sleep,making the contractions of the diaphragm more important.

During wakefulness, breathing is controlled by two interacting systems.

Its control center is based in the forebrain, and it regulates breathing for use in speech, singing, sighing, and so on.

Two things result from these changes in breathing control that occur during sleep.

Another experiment demonstrated that physical exercise, which was sufficiently vigorous to double the rate of breathing, had no effect on the frequency of yawning.

If the theory was correct, breathing air with extra carbon dioxide should have triggered yawning, while breathing pure oxygen should have suppressed yawning.

In addition, breathing during REM depends much more on the action of the diaphragm and much less on rib cage action.