As I have iffy knees, I've been really scrupulous about keeping to rest days. But I'm doing jantastic, and sometimes fitting the 3 runs round my other commitments can be a challenge, especially if I'm thrown off by something (illness or whatever)
At what point does it become OK to run 2 days in a row ? I assume it would be sensible to make both of them short, and maybe run on a knee-friendly surface ? I finished c25k 2 weeks ago, so I'm still a real novice at this !