Your brain is a a powerful tool designed for completing quizzes here at VideoQuizStar.com and, well, keeping you alive of course! Your brain also uses 20% of the total oxygen and blood in your whole body. It may seem like a lot, but your brain really needs it. A lack of oxygen in the brain for simply 5 to 10 minutes will result in permanent brain damage. Make sure you get a good night’s sleep too before completing any quizzes, since sleep deprivation seriously affects your brain. It can lead to impaired judgement and slow reactions. While resting, the human brain only uses one-fifth of a calorie per minute. Don’t push your brain too hard though, as stress has been shown to cause an alteration of brain cells, brain structure and function. So, sit back, relax and enjoy one of our very entertaining, no pressure quizzes.