🤯 Verified Fact · Body
Wacky WorldHuman Body
Despite comprising only about 2% of total adult body weight (approximately 1.4 kilograms or 3 pounds), the human brain accounts for roughly 20% of the body’s total basal metabolic oxygen and glucose energy expenditure. Most of this continuous caloric burn—around 320 calories per day—is dedicated to maintaining electrical ion gradients across billions of neuronal membranes via sodium-potassium ATP pumps and facilitating synaptic neurotransmitter cycling.
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