on the surface of a pond. [Divya-karaṇa:] Let the back of the neck be long and let the chin drop gently, unclenching the teeth and releasing the jaw. Let all the muscles of the face soften and release (you may wish to use your knuckles to massage your eyebrow ridges and jaw hinge to help them release). Let the eyes sink back in the eye sockets. Finally, gently curl the tongue upward a bit and let its tip point toward the crown of the head. All the other muscles of the face and head should be slack.166
