In the heroic contortions that lots of us go through attempting to avoid night-time reflux we probably have given little or no thought as to what those gyrations may be doing to our skeletons, in particular the spine.
Here is an excellent video which outlines some of the important principals - what can inadvertently go wrong and the simple measures which will provide correction and protection.
Sadly I doubt that there will be many who will be able to follow the suggestions directly; nevertheless it may stave off yet more discomforts in future if we bear in mind such issues as neck support and alignment of major joints, when we build our nests.