What are junk miles and are they worth it?

Breaking down what junk miles are and if you're running any

Last week, I wrote to you about recovery miles. Personally, I think my recovery runs are the hardest run to do - I'm sore, tired, run down, not running very far, and I usually lack enthusiasm for these types of runs.

This week, I'm going to touch on "junk miles": what are they, what do I think of them, and are they "worth" running.

Here's some back story…