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Deep Work Fuel

Meaning

Deep work fuel is a conceptual term for the optimal metabolic substrates that power periods of sustained, high-concentration cognitive effort, particularly tasks requiring executive function and complex problem-solving. While glucose is the brain’s primary fuel, an optimized metabolic state often leverages alternative substrates, such as ketone bodies, to ensure a steady, efficient energy supply. Achieving this state is paramount for maximizing cognitive endurance and avoiding the hormonal fluctuations associated with glucose crashes.