Unicycle world record attempt
A young man from Somerset will head off on an extraordinary challenge tomorrow.
Ed Pratt aims to ride round the world on a unicycle - something that's never been done before.
He's raising money for the School in a Bag charity which provides equipment for vulnerable children around the world. It could take two years to complete.
Ed says: "It's very do-able. You just get up, you cycle, you sleep and you just repeat that day after day. It's just doing it day after day is definitely going to be tough but I reckon I'll get into it and it'll work."