Is it safe to sleep with earbuds on?

without music: If you are using earbuds to block noise the main problem is if you get tangled in the cord. In that case foam earplugs or a white noise machine might be better. But if you are wearing them to listen to music or audiobooks you need to be aware that the longer you are exposed to noise the greater the chances of hearing loss. Save your noise exposure for when you are awake.