In teaching yoga, an external frame of a pose is created by softening and connecting with the internal experience of the body.  This awareness of internal connection in the body can be applied on the horse; so that, the internal frame creates a balanced, centered position that is in harmony with the horse.  So often, as we strive to reach the perfect pose, the perfect relationship, the perfect job, we do so by hardening and forcing in the body. This hardening only leads to suffering and injury. The same potential for hardening and injury can be true in relation to riding.  Lower back and SI pain are notorious among equestrians, especially women.  However, the same potential exists as is found in yoga, that by staying connected to our internal experience in a pose or in the saddle we come closer to self and center.  This process connects body, mind, and spirit in relationship with a sentient being.