The date is the 21 March. The challenge is the Hula Hoop Hoopathon.

The aim is raise money for this year's Sport Relief, while getting people across the nation to break the world record for the number of people hula hooping at the same time - the only snag is that they need to keep the hoop in action for two minutes.

Hoopathon has been launched by food manufacturer Hula Hoops, in celebration of its official partnership with Sport Relief 2010.

There will be 16 Hoopathons taking place at the flagship Sainsbury's Sport Relief Mile events.

The goal is to get 200 participants hula hooping at each event, as 3,200 people are needed to break the world record - so why not encourage your members to go along?

If that's not enough of a workout for them, they can also take part in the Sports Relief Mile, which will be held afterwards. Details: www.hulahoops.com and www.sportrelief.com