Mini D: Zero pressure... an absolute vacuum. It would be a matter of wether you froze solid prior to exploding... or in the act of it.
You mean the internal pressure of 1 atmosphere (14.7 PSI or 34 feet of water) compared to the external pressure of 0 would cause a person to explode?
That means a diver quickly ascending from the depth of just 34 feet would explode. That is not the case - people dive to much greater depths and rapidly ascend without impoding or exploding.
At most, we would expect a major burp/fart and ears popping and some ofthe air escaping from the lungs (if there is no air tank available) and maybe some abdominal cramps.
The blood and water in our tissues would not boil at all, let alone explosively, since at 0 pressure water boils at 157 Farenheit - which is way above our normal body temperature.
miko