KQED:
the one thing that is very dangerous are these enormous seas. And I have come very close a few times to losing my life and I've been sucked into underwater caves.
...
I remember shivering for about a year, every day. And then one day, I just stopped shivering and I was like, "Wow, my body is getting used to this. I can thermoregulate." And I slowly started to figure out how to keep comfortable and keep warm. And of course, your body adapts. But the interesting thing is, if I've had a bad day or I haven't slept well or I've had an injury, I go in the water and it's very difficult for me to thermoregulate.