When you just can't shrink any more, hold this position with your breath all exhaled as long as you can. Now, s-l-o
-w-l-y, let go, while s-l-o
-w-l-y taking a deep breath. Your muscles should be thrilled to go limp, totally relaxed. Take in all the air that you can---then take in a little more---then a little more. Hold it as long as you can, then s-l-o-w-l-y let go, and let go, and push it all out. And give another push to totally exhale.