When it comes to training your brain, your sense of smell is possibly the last thing you would think could strengthen your brain. Learning a new language or reading more books – sure. But your nose?
Science shows that undergoing intense olfactory training can result in significant structural changes to the brain. What you are able to perceive in the world ultimately depends on your cognitive engagement with it. That is, the mind is enhanced by what you can train your brain to do.
Just like strength is as a result of muscle training, cognitive training of the senses is the bodybuilding of the brain.