Brain surgery could be the oldest form of medicine. It was practiced in the late stone age (around 7,000 BC) with remarkable levels of success.

We have around 70,000 thoughts per day. But 98% of those thoughts are repetitive – we had them yesterday as well

Brain scans show that a London taxi driver generally has a larger hippocampus than usual. This is due to having to memorize the streets of London when in training.

This is a trick question. The brain performs better for creative work like writing or drawing (as opposed to problem-solving) when it's tired. So late at night is generally the best time to be creative.

Despite the common myth that we only use 10% of our brains, we actually use almost all of it, even when we sleep.

An awake brain generates 23-25 watts of electricity, enough to power a lightbulb.

The brain doesn't stop growing until the age of 25. Babies are born with large heads to accommodate rapid brain growth.

Almost three-quarters (73%) of the brain is water. It needs this amount to stay functional. Therefore, if you feel forgetful or 'slow,' you might be dehydrated.

The brain uses up 20% of the body's energy intake. It also consumes the same percentage of the oxygen we breathe.

The average human brain weighs around three pounds and is the size of two clenched fists.