This is a great article regarding running.  I have always said I do my best thinking while running.  The article talks about other endurance sport activities – biking and swimming – which also work for me but not as well.  Why? I speculate that the brain needs to compute a number of other factors with biking and swimming that deal with personal safety – so that has the potential to cloud thinking.  Anyways, focus on an issue, and run! Run until you solve it.  Forest Gump did.

http://www.nytimes.com/2016/12/14/well/move/running-as-the-thinking-persons-sport.html?smprod=nytcore-iphone&smid=nytcore-iphone-share