Your Brain’s Energy Appetite

Did you know that Your brain makes up only about two percent of your body weight,

yet it uses around twenty percent of your body’s total energy. That means even

when you’re just sitting still—thinking, remembering, or daydreaming—your brain is working

nonstop, consuming fuel to keep you focused, alert, and alive.

So the next time you feel mentally tired, remember—your brain has been doing a

lot of heavy lifting.”