Interesting that no one has commented on the central point of the article, that living entirely in your own head for too long is just plain unhealthy. This problem has been around for a long time. In Gulliver's Travels, the Laputans spend so much time thinking, they have servants called flappers who periodically rattle them into awareness of the actual physical world around them.

Our minds can and will go anywhere. Sometimes we need to be reminded of our physical, social, time-bound being, of its limits and where to focus our attention. That's called "being grounded."