good point Sue, on the temp zone thing. Since we operate around the 37 degree C (sorry people don't do farenheit...did I spell right) any temperature below that becomes effectively a heat sink for our precious life force, the difference between a 0 degree day and above is purely a calculation of time.

the other thing where people put perhaps a tad too much faith in is 'just' having the right clothing, don't get me wrong - you need to good gear to slow down the loss of heat but people forget that it's their body that puts out the heat. Once a person become tired and thus exhausted, all the high tech clothing won't save them. Only another external heat source eg shelter and warmth.

We see more people pushing themselves to do quick alpine or above bushline crossings (complete with all the gear) but miscalculate on their physical ability.

Did anyone see the British S.A.S "hunting Chris Ryan" episodes? Chris Ryan is one tough guy to say the least....and well trained...yet during one of the episodes...even this guys made a tactical mistake and had to be rescued due to him suffering hypothermia and was on the way out!

Even tough guys die from the cold