When we breathe correctly, we have a sufficient amount of carbon dioxide, and our breathing is quiet, controlled, and rhythmic. If we are overbreathing, our breathing is heavy, more intense, and erratic, and we exhale too much carbon dioxide, leaving our body literally gasping for oxygen. It’s very intuitive: If we breathe better, increasing the amount of carbon dioxide inside us, then we can deliver more oxygen to our muscles and organs, including the heart and brain, and thus heighten our physical capacity.
