I am a man who tilts. When sitting, my head slants to the right; when walking, the upper part of my body reaches forward to catch a sneak preview of the street. One way or another, I seem to be off-center–or “uncentered,” to use the jargon of holism. My lousy posture, a tendency to slump or put myself into lazy contorted misalignments, undoubtedly contributes to lower back pain. For awhile I correct my bad habits, do morning exercises, sit straight, breathe deeply, but always an inner demon that insists on approaching the world askew resists perpendicularity.