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Sustained Intellectual Effort

Meaning

The cognitive capacity to maintain high-level focus, concentration, and mental processing over extended periods without experiencing significant decline in performance or accuracy. This effort is physiologically demanding, relying on consistent cerebral blood flow, stable neurotransmitter balance, and efficient glucose metabolism in the brain. The ability to engage in sustained intellectual effort is a key indicator of optimal neuro-hormonal function and high cognitive resilience throughout the day. It is a critical component of functional productivity and mental acuity.