Random Friday Facts — Human Brain Edition


Researching for this post was thoroughly educating. It really brought out my inner nerd. I learned a bunch of new things and it was very cool to see how amazing and complex the human brain is. God’s handiwork is incredible!

  • 85% of the brain is the cerebrum.
  • The average weight of a brain: 3 pounds.
  • 75% of the brain is water.
  • Contains 100,000 miles of blood vessels.
  • 60% of the brain is fat — more than any other organism.
  • Contains 100 billion neurons.
  • Number of synapses per neuron: 1,000-10,000
  • 60% is grey matter (neurons — which gather and transmit signals) and 40% is white matter (dendrites and axons — which create a network by which neurons send their signals).
  • Stress alters brain cells and functions.
  • Your brain recognizes your touch, so you can’t tickle yourself. (Admit it, you’ve tried.)
  • Your brain needs 20% of your body’s oxygen and blood to function.
  • Dreaming takes more brain activity than any waking function.
  • Music improves brain organization. (Score!)
  • Number of neurons produced per minute during early pregnancy: 25,000
  • The brain generates 10-23 watts of electricity — enough energy to power a lightbulb!
  • You have an average of 70,000 thoughts per day.
  • The brain uses 20-30% of the calories you consume.



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