Treat Your Brain Like a Muscle: Exercise It. Anatomically, your brain isn't a muscle; although it contains a bit of muscle, it's predominantly gray and white matter, with cellular structure and function far different (and more complex) than that of muscle.
The brain is not a muscle it is an organ, and a very unusual and complex one at that. It plays a role in every one of our functions, controlling many organs, our thoughts, memory, speech, and movements.
