Summary: <p>We'll find out how hypnosis works and why on this week's Please Explain. <a rel="nofollow" class="guestlink">Dr. Philip Muskin</a>, MD is the Chief of Consultation-Liaison for Psychiatry at the Columbia University Medical Center of the New York Presbyterian Hospital and Professor of Psychiatry, looks at what hypnosis is used for and if it's possible to use it to change or control behavior.</p>
