But what is zone 2 cardio, exactly? How can you make sure you're doing it right? And is it really so bad if your heart rate ...

We are here to debunk this all for you. Zone 2 training, also known as aerobic base training, is not just another fitness fad ...

fuelling and even the social environment you run and race in that will have as much if not more of an impact than the training zone you use and the split of aerobic and anaerobic energy linked ...