The average person breathes about 23,000 times a day.

The lungs are filled with tiny air sacs called alveoli and the lungs contain over 350 million alveoli.

The average adult lung is about 12 inches long.

The average adult breathes in about 1 pint of air during each breath and the most air you can breath in is about 4 quarts.

The average adult lung weighs about 800 grams, but about 90% is air and only 10% is tissue.

More than 5 million American young people have Asthma. While Asthma can be controlled there is no cure.

Exercise makes the lungs stronger.

Smoking a pack of cigarettes a day will deposit about 1 cup of tar per year directly into the lungs.