Tuesday, August 3, 2010


Body function.

Everybody yawns, from babies to adults. Even animals yawn. But why do we yawn? To tell you the truth, no one has the exact answers. However, there are many theories and ideas about why people yawn.

Reasons why people yawn.

To help our body bring in more oxygen into the blood.

To help our body move more carbon dioxide out of the blood.

To stretch the lungs and lung tissue as a means of flexing the muscles and joints, increasing the heart rate so that we feel more awakes.

To help keep the lungs lubricated with an oil-like substance so that it won’t collapse.

Did you know??

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