I don’t know. Once I tried falling asleep to the sound of rain but it only stressed me out because I knew my phone would be unlocked all night and my battery would die and I didn’t like that 
But I could listen to it if I’m just trying to relax because I think it does help with that. Ocean noises are perfect, I could listen to that all day if I’m being honest and whale sounds are also great! If I didn’t care so much about my phone being on I would fall asleep to that every night.
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