Brain is only 2% of the body weight but it usurps 20% of the Blood Left brain is analytical and materialistic, right brain is abstract and creative! Either you are left - brained or right - brained , meaning that your one side of the brain is dominant. Learning new things changes your brain and increases your intelligence — even if you’re older. Brain cannot feel pain as there are no pain receptors. That is the reason Brain surgeons can perform surgery while the patient is completely awake. In fact, they prefer the patient is awake, so that they know immediately if anything has gone wrong If a human's brain worked like a digital video recorder, it would be able to hold more videos than can be found on Youtube and would take an equivalent of a 100 years to stream. When a person becomes "black-out" drunk, they aren't forgetting what happened. Their brain becomes confused and temporarily loses the ability to record new memories. Déjà vu (French for “already seen”) has never been fully explained, though some scientists believe that a neurological glitch causes an experience to be registered in the memory before reaching consciousness. Men have a sexual pursuit area that is 2.5 times larger than in the female brain. Wearing a helmet can reduce the risk of brain injury by as much as 80%. The human brain uses just as much power as a 10-watt light bulb. The human brain is the largest and most powerful sex organ. There are so many nerve cells in a human brain that it would take almost 3,000 years to count them. Our brains have a negativity bias and will remember negative memories more than good ones. This helps us to better protect ourselves. Convincing your brain that you slept well scams your brain into thinking it really did. Your brain does more creative work when you’re tired. It takes 5 different parts of your brain for you to understand and laugh at a joke.