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

We actually do take large breaths every 5 minutes or so. When they used to have old breathing apparatus many people died, when they introduced a large breath every x minutes the death rate reduced.