This is some really interesting stuff. I've been experimenting around a baseline paleo diet(which has been pretty amazing), and I started doing short 15-30min morning runs as a way to induce a mild "wake up" stress, but I might switch over to doing some body-weight resistance(push-ups, situps, squats) instead.
The article is about a small group of elite long distance runners. I don't think you can draw any meaningful conclusions about your short morning runs here.
And it is worth noting that this is a blog post about an article about a study. The author of the blog post has not even read the abstract of the study, let alone the study itself. The article on which the blog post is based says Note that this study was published as an abstract and presented at a conference. These data and conclusions should be considered preliminary until published in a peer-reviewed journal.
