In Pilates, in order for the breath to come into the back of the ribcage, we have to create space in the spine and upper back. When we exhale, we close the front of the ribs and the abdominals naturally lift into the back, because it is open, space has been made. If the back is compressed, air will naturally go into the belly. You might hear me say 'open the umbrella of your back'. Perfectly balanced breathing, feeding the powerhouse!