What is functional training?

The lists are out. The predicted fitness trends for the next year include high intensity interval training, bodyweight training, and training with highly educated professional coaches.
What is predicted to trend down?
Among others, exercises and training programs labeled “functional.”
So, when it comes to exercise, what does the “functional” label really refer to….?
Here is an article from the archives that sheds a little light on the subject: What the H*ll is Functional Training Anyway?

-Matt Pirtle