Hitting the Velodrome: BBC Breakfast Christmas Challenge
21 December 2012 Last updated at 09:38 GMT
For this year's Christmas Challenge, the BBC Breakfast presenters are hitting the velodrome to see who can cycle the fastest.
Inspired by the Olympics, Bill and Susanna are taking on Charlie and Louise at the National Cycling Centre in Manchester.
In part one - Graham Satchell watched them get kitted out and take to the track to practice.