S (National Association of Bodywork in Religious Services), 98, 282, 332 nails, trimming, 169 NaisbItt, John, 32 Natural Essentials, 329 NCBTMB (National Certification Board for Therapeutic Massage and Bodywork), 82, 87, 327, 332 neck corporate massage for, 208-209 danger zones on, 133 front of, 133 hyperextending,