Yes, you can listen to subliminals while you sleep. It is one of the easiest times to fit a program into your day, because you are already lying there for hours.
Nothing about the audio changes overnight. Music or nature sounds on top, spoken affirmations underneath, quiet enough that you never consciously pick them out. Sleeping is fine because you do not need to focus or concentrate for a subliminal to do its job.
Make it comfortable first
Regular earbuds get painful the moment you roll onto your side. SleepPhones solve that. They are soft headphones built into a headband, so you can lie on your ear and barely feel them.
A speaker on the nightstand works too. You lose the left and right ear separation that way, which is why headphones are the better option when you can manage them.
Start with every other night
For some people, playing subliminals all night long is overwhelming. If you are new to subliminal audio, begin by listening every other night and see how you feel in the morning.
Restless sleep or a busy head the next day is your signal to pull back. Shorter sessions, fewer nights per week, lower volume. If something feels off, here is what to do about it.
Other people run a program every single night from day one and love it. Everyone is different, so find out what works best for you.
Keep the volume low
Somewhere between 10 and 50 percent is the range we recommend, and at night you will probably want the lower end of it. The music should sit in the background of the room, quiet enough to fall asleep to.
Loud does not mean stronger. More on picking your volume if you want the details.
Give it a few weeks
Overnight listening piles up a lot of hours quickly, and that is a good thing, though it does not speed up the calendar. Most people start noticing changes after 2 to 4 weeks, with deeper shifts after 2 to 3 months.
Pick one program, run it consistently for a month, and judge it then. Every program comes with 90 days money back, so you have room to test this properly on your own schedule.