Dr Karl

Now, I'd been in a pool for about three-quarters of an hour and the chocolate which normally melted on my tongue would not.

My core temperature had dropped from 37 to 36.

Wow.

Wow.

So your core temperature is normally very constant unless you're hypothermic, you know, cold water, or you're having a fever.

So you need that difference in temperature from the inside to the outside so that heat will go down that temperature gradient.

The butter would...

I'm going to have to look up the melting point of butter.

You've got homework.

You've given me homework here and thank you so much, Dr. Patina, writing it down.

Thanks, Patina.

Thank you, Dr. Patina.

Peace your cane.

It comes, I think, I'm not sure, from the popularity in running where people would go for a run and then they'd gradually work their way up.

This is back in the old days.

And back then there were very few people who actually did long-distance running apart from professional athletes.

And running and jogging came in and people suddenly realised that they could run for four kilometres or five and then when they went to six...

They had nothing.

They were just totally out of energy and the metaphor came in of hitting the wall.

If somebody can possibly give me a better origin on that term, please ring on 0439757555.