The weight of your brain is about 3 pounds.
Your skin weighs twice as much as your brain.
Your brain is made up of about 75% water.
Your brain consists of about 100 billion neurons.
There are anywhere from 1,000 to 10,000 synapses for each neuron.
There are no pain receptors in your brain.
There are 100,000 miles of blood vessels in your brain.
Your brain is the fattest organ in your body and may consist of at least 60% fat.
Psychology of Your Brain
You can’t tickle yourself because your brain distinguishes between unexpected
external touch and your own touch.