Intellectual labor pollutes the brain with toxic substances.

As a result of nervous activity in the process of mental work, potentially toxic substances, in particular glutamate, accumulate in the prefrontal cortex of the brain. Because of this, people feel cognitive fatigue - the desire to do anything disappears. French scientists came to such conclusions. They hope that their discovery will help fight burnout among office workers. According to neuroscientists, feeling tired can signal the need to stop working in order to preserve the integrity of brain function. To combat mental exhaustion, scientists recommend rest and sleep, as during it glutamate is removed from the brain.