How many breaths would the average human take in a year? in a lifetime?

Factual Questions
1

This question may be beyond a concrete answer because there are too many variables. Still, this seemed like the place to ask it. Mods, please move it if you think it doesn’t belong here.

The question is straight-forward - how many breaths does the average human take in a given period of time? And can I extrapolate from there to determine the number of breaths in a day, a year, or a lifetime?

Variables are many - do people breathe more or less often at different stages of their lives, eg, do babies breathe more or less often than teenagers? What about adults? What about seniors? What about athletes vs. sedentary people? How much slower is our breathing in sleep, rest, moderate activity, exertion?

My instinct tells me that humans take fewer than one trillion breaths in a lifetime, but I would weigh that hypothesis before I go spreading it around.

What do Dopers think?

2

I read online that the average person breathes 12-20 times a minute, with 15-16 being standard. If we use age 75 as the life expectancy, that’s around 600 million breaths.

So, yes, not only less than a trillion, but far below, for almost everyone, below a billion.

3

A trillion SECONDS is 31,700 years.

4

In the average life a person will take roughly 600 million breathes and have about 3 billion heartbeats.