The brain is an amazing piece of technology. The number of synapses fired between the 100 billion neurons in the average brain is more than the number of stars in the universe. The brain generates between 10 and 23 watts of power while a human is awake. This amount is enough to power a light bulb! Although the brain is so powerful, it is made up of about 75% of water. Information in your brain travels at approximately 268 miles per hour. And contrary to popular belief, the brain does not stop developing at the age of 18; it develops well into a person’s 20’s and beyond. Yawns are thought to send more oxygen to the brain, to cool down the synapses and therefore wake up the brain more.
