Listen to sound files using headphones. The aim is to achieve the following effects: beta: increased alertness, concentration and problem solving alpha: relaxed focus, increased information uptake theta: relaxation, creativity, dreams delta: unconscious sleep Theta and delta waves are best listened to when inactive, preferebly while lying down and (especially delta) may induce sleep. File length is 10 minutes, but can be played in repeat if desired. Your feedback is more than welcome!