For both Posture and Pranyama understanding this connection makes sense.
From the very top of the inner thighs to the broad plain at the floating ribs, this triangle shape deep within our bodies creates stability in asana and improves our understanding of pranyama.
Feel the psoas attachments to the spine while holding the breadth at the diaphragm with these simple practices & click on the link below to read more.
Click on the link to this Daily Bhanda article for a deeper understanding.
http://community.benchmarkemail.com/users/rayalongmd/newsletter/Did-you-know-that-your-diaphragm-is-also-important-for-posture-#.V0DY1-guRsU.gmail