Generally, we advise against sleeping in your hearing aids for a couple of reasons. First of all, it may not be comfortable to sleep on an ear with a hearing aid in it! Also there is the chance it could come out while you are sleeping and get lost in the sheets. But the primary reason is to allow your ear to breathe. The ear canal is lined with skin and needs air circulating over it regularly. Nighttime is a good time to allow this to happen. And lastly, many of us don’t need to be able to hear when we are sleeping so it’s a good time to remove the hearing aids and open the battery door to conserve battery life. If you do happen to fall asleep with the hearing aids in your ears, know that it is not life threatening, but we would not recommend sleeping in them on a nightly basis.