What Are Junk Miles

[richpips]

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No amount of running slow is equal to running fast. All it does is drains the system of vital chemical resources, the very resources that should be used in producing a stronger and fitter body.

Depends on what the runner is trying to achieve surely? Are you suggesting an ultra runner would be best served by a few short fast track sessions a week?

As has been already asked, what are these "vital chemical resources" that are drained by running for a longer time at a moderate intensity, vs a short time at a high intensity?

Surely you provide nutrition for your body based on it's output.

As to the evidence behind it just look at the number of Tour De France cyclists over the years addicted to cocaine and amphetamines. You see that much training on a daily basis disturbs the chemistry of the brain leading to serious mental health problems like anxiety and depression.

There have been a number of TdF cyclists who have taken drugs to get the edge. Back in the day it was the done thing. There's no secret if you get into any drug, for many people that can lead to various health problems. It's not confined to cyclists, look at the iron curtain athletes from back in the day.

Your last sentence is junk.