In short:Heart-rate-based schedules and principles for faster running. Not for complete beginners Full Review: Heart-rate-based schedules and principles for faster running. Not for complete beginners. PeteMed: THE HEART RATE IS THE LAW! Strengths: A
FOR NEUTRAL RUNNERS Strengths: Can be used on the roads or trail, very comfortable Weaknesses: Can be used on the roads or trail, very comfortable Overall: Not as good in general as the Nimbus VI, although that was near perfection. Good value if you go
