What actually happens to the brain when we meditate? Published studies have documented the many physical and mental health benefits of meditation, including decreased pain, better immune function, less anxiety and depression, a heightened sense of well-being, and greater happiness and emotional self-control. Imaging studies show, with meditation there’s increased activity in brain regions associated with attention, a higher volume of grey matter, and lessened amygdala response to emotional stimuli. In this episode meditation teacher and director of the David Lynch Foundation Bob Roth talks with documentary filmmaker Perri Peltz about the scientific case for taking up meditation.