>Btw, has anyone actually been sleeping on the floor or
>a mat with no pillow lately?  I found that I am much
>more flexible among other things.

I had the experience of sleeping in India on hard floor, school table and
alike. It was difficult the first days after it was very confortable because
i had to relax to be able to sink my body "inside "the earth
the last day of the trip in Bombay when we had to spend 2 nights in a 5th
star hotel ( paid by air India because of a strike) it was very
unconfortable to sleep in soft bed , and it tooks days to get use to it
again. It taught me a lot about our general attitude toward confort and how
we understand it backward.
jean-claude