"Flow" is not doing things you just already know. It's when your skill in an area is high and when the challenge is high as well.
This graph, from the wikipedia article on Flow sums it up succinctly: en.wikipedia.org/wiki/File:Challen...
What you're describing is more in the "Relaxation" section
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.