Jamie will be running across Canada during part of their winter, so will encounter Arctic temperatures he has never experienced before.
We took him to Gloucerstershire University's Sport & Exercise Laboratory where they have a chamber in which the temperature can be lowered to minus 20C.
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Figures released today reveal the 'posher' South East is benefiting from Government grants for flood defences - while our region misses out
Rain has pushed up from the south overnight and that will be with us for much of the day, with some heavy showers this afternoon.
Rain will be with us for much of the day with some heavy showers this afternoon. Winds will be much lighter than of late