Hindus, people of the IndusValley, and yoga say that at the time of the birth you are given so many breaths, what to do with it is your business. So it is up to an individual to learn how to use that wealth of breath judiciously. Number of breaths you take per minute will determine your lifespan. Sounds strange, does it not? Many things seem strange and unbelievable when we encounter it the first time.
If Alexander Graham Bell came back today, he will be puzzled at the sight of the cell phone which is an evolution of his invention of telephone! So get used to the idea of preserving your treasure of Breath.
Breathe deep, long slow breath. Utilize the entire capacity of lungs. Breath out slow and longer breaths. There should be smoothness in the flow of breaths. Jerks in the pattern reflects the state of mind. So you can train the mind through observing and training the breath.
Longest living animals on Earth, turtles and elephants, are slow breathers! Rapid breathers like birds have short lives. Their rhythms are natural. We humans have a choice.