The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From NHS Choices:
Use the official NHS Football Fan Fitness Challenge to test your health and fitness and see how you compare to fans from around the world. Everyone who plays will stand a chance to win tours of Wembley and tickets to England matches, courtesy of the FA. Built in association with the Mens Health Forum and supported by the Football Association, the app gives fans the chance to take a short and light-hearted fitness assessment to find out their transfer value. Players are then able to increase their individual transfer values by undertaking 50 challenges one for each day of the World Cup. Every fan that increases their value also boosts the standing of their team in the Football Fan Fitness League. KEY FEATURES Check your health and fitness and get your transfer value Find out areas for improvement such as drinking, weight, diet and fitness Play for your favourite World Cup and domestic teams Earn new badges through daily challenges Improve your understanding of male health risks Compare football teams "Football fans often know more about the fitness of their clubs leading players than they do about their own health. The Football Fan Fitness Challenge is a great way of changing that. Fans who play will be helping themselves as well as their teams." "The new Football Fan Fitness Challenge helps enormously to get men thinking about their health and, even more importantly, doing something positive about it." Each challenge has been created to highlight key risks to mens health. By providing relevant and informative features, videos, case studies and services, the Football Fan Fitness Challenge will help men find out more about the steps they can take today to improve their long-term health.