[Buddahaid]

I wasn't thinking of an explosive decompression but your fluids boiling off. However, I do stand corrected as to the overall reaction. Interesting that your own blood pressure is enough to prevent boiling.

I was remembering the first chapter of 'Satellites, Rockets and Outer Space' by Willy Ley which describes a pot of water at 100^F boiling at about 12mi in altitude and being the point where body fluids would start boiling.