If you had told Helen two years ago that she would be getting up at 6 a.m. on Sundays to swim in a freezing reservoir and spending her Saturday nights unshowered and covered in mud in a pub, she would have spat out her champagne. But when everyone around you starts settling down, what else is a glamorous party girl to do but to launch herself into the world of endurance sport? For someone who didn't even own a pair of flat shoes (and definitely no waterproofs), Helen would soon find she had a lot to learn. Join Helen on her hilarious and soul-searching journey as she swaps a life of cocktail bars and dating for the challenges and exhilaration of triathlons, trail runs, obstacle races, long-distance cycles and ocean swims - and sets herself the seemingly impossible goal of qualifying as a Team GB triathlete. AUTHOR: Helen Croydon is a freelance journalist, producer and media trainer. She's written for The Times, Sunday Times, Telegraph, Guardian, The Mail, Metro and several magazines. Since throwing herself into running and triathlon in 2014, her writing has also included health, fitness and outdoor adventure.

In 2016 she competed for Team GB in the age-group World Championship triathlon. She lives in east London and is originally from Cheshire.