Few things on earth rival the unpleasant feeling of vomiting. We've all been through it at some point in our lives. When you know it's coming it is impossible to stop. That is. . . Impossible until now. The P-MAV is an easy to learn technique that can save you from a lot of the trauma, distress and discomfort associated with vomiting. Developed by a dentist, Dr. Douglas Peterson, the P-MAV teaches you how to identify specific changes in salivary flow in order to inhibit the vomit reflex.