Vice writer Andrew Iwanicki spent 70 days lying at -6 degrees for a NASA study on bone and muscle atrophy. He describes his experience midway here and at the end here.
Here is a brief excerpt of some of the questions he had during his experience:
Why did I have to drink water out of an open glass, even though at the angle of my bed, it inevitably spilled all over my table and chest? Why did they serve soup in shallow bowls? Why were they serving soup to people in bed anyway? Did any of the staff have any idea what it was like to be stuck in bed?