Torpor is a state of being much like hibernation. Sugar gliders are not known to hibernate but they are known to fall into a state of lethargy or lack of movement which almost appears as if they are dead or dying. It is thought that this is a way of conserving energy/calories at times of extreme cold or low food availability.

I have witnessed this behavior at times of extreme shock. Much like how possums are known to faint or play dead or how some goats do the same when frightened or stressed, I think torpor is a similar reaction to stressors that puts the animal into a state of shock and dormancy, probably conserving blood flow for brain activity and vitals.

So essentially, I believe torpor to be equal to fainting. Fainting may not be a bad thing if you are about to freeze to death or be eaten alive.