1) Blood vessels
There are a staggering 100,000 miles of blood vessels in the brain, that is enough to wrap around Earth four times.
2) Source of headaches
A headache actually occurs in blood vessels around the brain, not the brain itself. The brain cannot feel any pain whatsoever.
3) Fat content
Your brain is 60 per cent fat – which helps carry water and protein through membranes to brain cells, keeping everything ticking over.
4) Power usage
The brain is quite greedy; it uses about 20 per cent of the power in your body that is generated from food consumption.
5) Trillions of connections
The brain has trillions of connections – much more than the internet, and more than can currently be counted.