I'm going to be taking part in the London North Tough Mudder on Saturday 4 May, and put simply, here's hoping the St John's Ambulance staff present are well drilled.

I've been told Tough Mudder shouldn't be a problem "if you can do 15 pull ups and run half a marathon."

I can't do either of these things. Clearly then, I'm well prepared for running 18km through muddy trails whilst swimming through ice-cold water, running through fire, clambering over 12 foot walls, and getting electrified by 10,000 volts.

This isn't going to end well.

But, you can make my inevitable demise count for something by sponsoring me. I'm raising money for Little Hearts Matter, a charity who help provide support and information to parents of children who have heart defects. Please do give generously - it's a fantastic cause, and they would be really grateful for all your help.

Donating through JustGiving is simple, fast and totally secure. Your details are safe with JustGiving – they’ll never sell them on or send unwanted emails. Once you donate, they’ll send your money directly to the charity. So it’s the most efficient way to donate – saving time and cutting costs for the charity.

So please dig deep, and thank you for your support and donations!