if you were laying completely flat it might feel strange, but in the bb you're upper torso is already inclined slightly, bending the knees slightly and having something soft under them is the perfect compliment, and it does bring your lower back into a more comfortable position like BB mentioned earlier.
'Classic.' A book which people praise and don't read.” ― Mark Twain
Who cares about showers, gourmet food, using flush toilets. Just keep on walking and being away from it all.
There are times that the only way you can do something is to do it alone.
For I consider that the sufferings of this present time are not worthy to be compared with the glory that is to be revealed to us....that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now.