I found something that doesn't make sense. In the "Less" chapter he talks about breathing not just slower but lesser amounts of air. But in the Exhale chapter he says lung capacity is super key to health and "shallow breathing will limit the range of our diaphragms and lunch capacity and can lead to the [bad] posture common in those with [illnesses]" (pg 64). How do I breath less / not-deep, but not shallow?