Men’s Health and eleia pure have teamed up to provide entrants in this years Survival of the Fittest events with the premium choice of bottled water. Survival of the Fittest is a series of fantastic endurance events across four of the UK’s major cities. London, Cardiff, Nottingham and Edinburgh will host the events that see participants climb over bales of hay, up sheer walls and through fire hose blasts as well as with many other challenging obstacles over a 10 kilometre distance. Across all dates around 20,000 competitors will test themselves against the innovative challenges set before them, in what have to be some of the most exciting events in the UK fitness calendar. For more details on the events you can click the picture above to visit the Men’s Health Survival of the Fittest website.