1. The human brain will grow three times its size in the first year of life. It continues to grow until you’re about 18 years old.
2. It is a myth that humans only use 10 percent of our brain. We actually use all of it. We’re even using more than 10 percent when we sleep.
3. Cholesterol is key to learning and memory. However, high cholesterol has different 
effects depending on your age and other factors.
4. Dreams are believed to be a combination of imagination, phycological factors, and neurological factors. They prove that your brain is working even when you are sleeping.
5. Information runs between neurons in your brain for everything we see, think, or do. These neurons move information at different speeds. The fastest speed for information to pass between neurons is about 250 mph.
6. Yawning actually wakes you up – Yawning gets more air into the lungs, thus increasing oxygen to the brain.
7.About 75 percent of the brain is made up of water. This means that dehydration, even in small amounts, can have a negative effect on the brain functions
8.Brain contains about 86 billion nerve cells (neurons) — the "gray matter."  and a billions of nerve fibers (axons and dendrites) — the "white matter." These neurons are connected by trillions of connections, or synapses.
9.it is impossible to tickle yourself – The brain dulls expected sensations when we cause them ourselves.
10.The weight of the brain is about 1.36kg, and is made up of roughly 75% water
11.the brain can live for 4 to 6 minutes without oxygen, and then it begins to die. No oxygen for 5 to 10 minutes will result in permanent brain damage.
12.Experts estimate that the mind thinks between 60,000 – 80,000 thoughts a day. That's an average of 2500 – 3,300 thoughts per hour. and about 80% of those are negative