Why is it that we don’t often breath to our full capacity, we take shallow breathes and rarely take full breath

Question

Why is it that we don’t often breath to our full capacity, we take shallow breathes and rarely take full breath

In: 680

Answer 1

You don’t need full lung capacity during the day to day, the extra expansion is for intensive movement. Otherwise you’d be breathing rapid fire trying to get your O2 up while exerting yourself.