Helen Skelton plans south pole mission
13 December 2011 Last updated at 12:30 GMT
Blue Peter presenter Helen Skelton is to attempt to become the first person to use a bicycle to help her reach the south pole.
The adventurous TV star will travel 500 miles across Antarctica in January, using an ice bike, skis and a kite to raise money for Sport Relief.
Speaking to BBC Breakfast, Skelton admitted: "I didn't really think this one through. I've never done anything like it."