This got me out of body on my first attempt. You have to experiment with it to make sure you have your headset positioned so it can detect your loud breaths and make sure the volume is not picking up other noises, etc. I actually used a gaming mic head set and blew air through my mouth and teeth instead of nose. I think the reason it works is because it keeps you in and out of sleep for quite a while. By the end, I found myself out of body, flopped over the foot of my bed. So I got up and went on my way (in my astral body). I had it set to wake me up about every 10 minutes and started this about 5 hours after going to bed (set an alarm and got up and out in my head set and then went back to sleep, getting awoken every 10 minutes). You can adjust it to suit your needs.