An Energy Crash is a sudden and profound state of acute fatigue and reduced cognitive function following a period of high energy expenditure or significant glycemic fluctuation.
Origin
This colloquial term describes the physiological endpoint of energy system exhaustion, often related to rapid shifts in substrate availability or CNS signaling.
Mechanism
Clinically, it often correlates with reactive hypoglycemia after a large carbohydrate load, where excessive insulin secretion leads to rapid glucose clearance, or CNS neurotransmitter depletion following intense activity.
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