What do you mean by contracts?--"Becomes smaller."

What do you mean by atmosphere?--"The air."

Of what use is the air when it is in the lungs?--"It makes the blood pure."

Why can you not live without breathing?--"Because, if I do not breathe,
pure air cannot get into the lungs to make the bad blood pure, and I cannot
live if the dark, impure blood is sent back again through my body."

Why must you live in the sunlight?--"Because the sunlight helps to purify
the blood and strengthen the body."

Why must you wear loose clothing?--"Because tight clothing stops the
circulation of the blood."

Why must you avoid tight-lacing?--"Because tight-lacing crowds the ribs
against the lungs, so that the lungs cannot move freely."

Why should you wear clean clothing?--"That nothing impure may pass into the
body through the pores of the skin."

Why should you keep the body clean?--"That the pores of the skin may not be
closed, but remain open to let the perspiration pass through."

What has the cleanliness of the body to do with the health of the
lungs?--"If the body is not kept clean, the perspiratory pores become
clogged."

What happens when the perspiratory pores are clogged?--"The impure