Does Brain Power Burn Calories? The Surprising Truth About Mental Energy
                                
                                
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                                    4 min read                                
                            
                                Although the brain accounts for only about 2% of your body weight, it consumes a disproportionate 20% to 25% of your body's total resting energy. This astonishing fact reveals just how metabolically demanding your brain is, even when you're doing nothing at all.