The Do Team bravely volunteered to do whichever challenge our users voted for, and you selected the muddiest, wettest challenge of the lot! Thanks.

On a cold morning in December we will be half-running, half-wading our way across the 8 mile mud course that is Grim Original.

Get involved in the fun now by sponsoring us with your actions!

Yes, you got that right: WE DON'T WANT YOUR MONEY!Browse the DoActions on the right and find one (or more) that suits you, then make your pledge(s). Some are really easy; others take a bit more effort. They're all about being a bit greener and healthier, together coming together to build a nation of Doers.

Because sometimes money isn't the best solution.

You only pledge to do your chosen action for two months; you'll receive a few helpful reminders and then at the end of the two months you'll be asked to confirm how you got on.

So please, get doing!

Thank you!!