Topic: Neocortex

Crabtree explains the biological mechanics of stress, describing how the brain shifts from the neocortex to the limbic system during fight-or-flight responses. This state limits problem-solving to fighting, running, or freezing, which can manifest as yelling at children or withdrawing from family duties. Maintaining a positive emotional state allows the "uniquely human" parts of the brain to remain active for better parenting.

The human gut acts as a second brain, connected to the central nervous system via the vagus nerve and containing its own enteric nervous system. Stress often triggers the limbic system and reptilian brain, switching off the logical neocortex and leading to "fire and wire" emotional eating habits established in childhood. These emotional attachments to food often override willpower, requiring an understanding of neurobiology to successfully change long-term behaviors.