Lie back, gown down, naked from the waist up but clothed from there down to my shoed feet. It really is most remarkably comfortable. Even my raised arms get cushioned rests that not only bear their weight but also bring my hands together without a hint of pain or even effort.
Two sounds compete. One, the background whirr of presumably the air conditioning, whose breath occasionally registers on my skin and makes me feel even more comfortable, if that were possible. And two, the radio, one of those commercial stations with music that is pretty much guaranteed to offend no-one but will probably inspire no-one either.