What is more beneficial when running to improve cardio?

[Scrap]

I believe in mixing it up, think its a good habit. You get to understand the bodies ability to understand its clock on exertion and Stress.

[Boxerharvey]

Thanks for the reply Scrap, good thinking one day old school road work and the next day laps of the football pitch. Do you think running every morning (apart from weekends) as well as gym training 3 Monday/Weds/Friday is enough or too much?

[Scrap]

Running every Day is not a good Idea, depending on the impact to the Spinal column. Its a part of the Anatomy that is overlooked while Running. We understand the impact on Joints to the lower limbs, but dont think about the damage done to the upper part of the body, by bad Technique while Running.