well my psychiatrist is about 70 years old. he has really helped me allot along with this class. i looked on the wall of his office awhile back and noticed that he has an award for America's Top Psychiatrist in 2004 and 2005 for Mood and Anxiety disorders. i thought that was pretty impressive. anyway, as far as the P.M.R., i believe that it was his mentor that actually came up with that exercise. He said that it had been studied, tested, and analysed for about to years. they started using it at the henry ford hospital in michigan years ago, to treat the guy's that were working down at the Ford and G.M plant. i gues the guys would come in to the hospital all stressed and full of anxiety and they would use the progressive muscle relaxation to treat em. He said that they had a really high success rate with it.