For your session, please dress comfortably and refrain from using perfume or cologne. All removable metal, including jewelry and watches, must be removed for the session. Pacemakers and other implanted metal are permissible. Hearing aids may be left in or taken out. Be prepared to relax and enjoy your session. It doesn't matter if your eyes remain open or closed, or if you fall asleep. There is a doorbell to alert the technician to any personal need that may arise during your session.