inhale & exhale

The rate at which a person breathes varies according to his/her age.

* A new born baby breathes in & out about 65 times per minute.
* by the age 15, the number of breaths decrease about 20 times per minute.
* When he/she reacing to 40s , breathing rate approximately to 18 times per minute.

These figure vary according to health, fitness level and wheater or not one is standing still or is active at the time.