I love fitness and I love doing hard stuff. I also loved my nan, lots. She passed a few years ago of vascular dementia and if her heart had been stronger the effects of the dementia wouldn't have been as harsh.

That's why I've chosen Heartbeat as the charity I want to support and a mammoth task requires a mammoth target.

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.