I leave here my personal experience with this audio; and it is that one of the main reasons why he decided to buy it is because I suffer from anxiety and seeing the description of the audio encouraged me due to the effects of serotonin, I must say that it has helped me a lot since I listened to it and I feel happier and content . Now that I saw the results of this audio I plan to acquire others in the near future. Thank you I Doser!