For maximum benefit it is recommended for you to stay present in your body. You may sit, stand, lie down, or perform light movement.
Masati often suggests to alter any usual routine in order to be most present. For example, if you are used to sitting while meditating, try the frequency HyperMeditations while standing up.
While they are not recommended while driving to avoid any disorientation or sleepiness, you may play the frequency HyperMeditations in any setting such as work, at home, while exercising, etc.