Why are those two ideas so critical?  B/c they help the body absorb the force of gravity evenly!!! This is one of the most critical areas that’s being neglected by people everywhere!  The body can help support itself by using postures that lift our bodies against the force of gravity.  That can happen when we free the intercostal muscles to allow the chest to expand to its maximum.   By calling into action the unused muscles to ELEVATE we’re sharing the force. This allows for the spinal to rest.  That frees the heart to pump the oxygen to all of the cells.  It may not seem important, but our conformity to the body’s curves can reduce the ‘friction’ as the blood cells deliver oxygen.