Sally Edwards , a leading authority on heart rate training , discusses the latest advances in training with a heart - rate monitor .
One of the world 's greatest running coaches , Jack Daniels , offers his proven training advice that will benefit every runner .
Sally Edwards , a leading authority on heart rate training , discusses the latest advances in training with a heart - rate monitor , and one of the world 's greatest running coaches , Jack Daniels , offers his proven training advice that will benefit every runner .