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.
Train too hard, and you'll probably burn out or get injured. Train too gently and you simply won't make the most of your potential. As a runner, you deserve the personal attention and expert training advice that the world's best athletes receive. My goal is to provide tools that help you achieve your goals and train to your full potential.