You're going to like this.  You relax in a comfortable chair or recline on a soft table while listening to music through earbuds or speakers.  A sensor on each side of your scalp transmits information about your brainwaves to the computer, which looks for moments when your brain's activity is about to shift.  The computer alerts your brain by small interruptions in the music.

Note that nothing is done TO your brain...your brain simply receives information, which it is able to use to reorganize and improve its usual patterns.

A typical training session lasts approximately 35 minutes.  During that time you can read a book, take a nap, or simply relax.  The choice is yours.  Whatever you choose to do, the training will continue unimpeded.