Explanation:
1.Lungs float on water :It’s not something most people are aware of but, actually, the lungs are the only organs in the human body that are capable of floating on water.
2.Oxygen only plays a small part in breathing: The air we breathe contains 21 percent oxygen, but our bodies only use 5 percent — the rest is exhaled.
3.Children and women breathe faster.
4.Seventy percent of waste is eliminated through your lungs just by simply breathing.
5.A person usually breathes an average of 13 pints of air every minute.
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