Dr. Daniel and Bernadette Skubilc: How Rhythms Capture Our Brain and Can Be Addictive

„A driving drum rhythm in excess of three to four beats per second will put the brain into a state of stress, regardless if the listener likes or dislikes the music. And when the brain is in this stressful state, it will release opioids1 a group of natural hormones that function like morphine to help return itself to normal equilibrium and sense of well-being. These natural opioids, if experienced often enough, can be addicting, creating in the listener the continual desire for that 'high' somewhat like the high runners experience.“