I don't know where you came from, but are you sure you belong to me? I mean, I went away for 3 weeks in March and except for once, didn't do any running. Before I left, I could do 3 miles.
Then I come home, and I do a 4-mile run. Do 3 days of weight training, a walk in the woods and some intervals. This week I did a 5-mile run. Just because I felt good at the time and wanted to see if I could do it. And I did. With almost no pain. What is up with that?
How far do you intend to go? I hope you don't want to do a marathon someday. The brain has no intentions of ever doing that long of a run.
Keep it up though--I'm not complaining. I'm just a bit dumbfounded.