Cold shock response

So this is really, really interesting because there are different phases of a... a possible cold water immersion.

The first phase, I try not to be too kind of theoretical, but the first phase is the cold shock.

And the cold shock, it's just the first minute, the first minute and a half.

Then you start gasping and your heart rate elevates and also your breathing rate elevates.

And you are in a very kind of vulnerable situation just when you, at least when you fall accidentally out in the water.

The first phase we have been very interested in at Norseman, because I should mention this, but at the start of the Norseman, we start by jumping straight into the cold water from a ferry at night in the darkness.

And that is something that we were very worried about if that was dangerous.

And we are still working on doing research on the physiology around the first phase, the cold shock and the strain on the heart.

We don't need to get into a $6,000 cold plunge to have this effect.

When you get in, there is initially a cold shock response, which is an involuntary gasp.

Essentially, you can imagine when cold water hits you, there's an immediate quick inspiration, right? You're breathing in very quickly, very rapidly.

And then initially you're going into kind of an uncontrollable hyperventilation phase, which can last anywhere between 60 to 90 seconds, maybe shorter, maybe longer, but on average around a minute.