How do you wee at -40C?

A team of British women soldiers are preparing to become the first all-female group to walk across Antarctica. They will have to endure temperatures of -40C and walk for up to 9 hours a day carrying more than their own body weight in supplies.

Exercise Ice Maiden is currently training in Norway for the 80-day south pole challenge in September. Among the many challenges is coping with extreme cold when you need a loo break.

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