What percentage of brain power do humans typically use?

The belief that humans only use 10% of their brains is a myth that has been popularized over time. In reality, neuroscientific research shows that humans use virtually all parts of their brain and that different regions are responsible for various functions. The idea that only a small fraction of the brain is utilized is misleading; brain imaging techniques have demonstrated that even while at rest, a significant amount of brain activity is occurring.

While 20% may seem like a more reasonable estimate of how much of the brain is actively used or engaged during specific tasks or cognitive processes, the reality is more complex. The brain is a highly interconnected organ where different regions work together for numerous functions, meaning there is rarely a time when "only" a certain percentage is working.

Therefore, the correct choice reflects a more accurate understanding of brain function, where the concept of using 10% minimizes the actual capabilities and efficiency of the brain as a whole across various activities and states of being.