The brain controls your ability to think, talk, feel, see, hear, remember things, walk, and much more. Check out what else.

1. The human brain isn't actually fully mature until age 25. The rational part of a teen’s brain isn’t fully developed and won’t be until age 25 or so.

   In fact, recent research has found that adult and teen brains work differently. Adults think with the prefrontal cortex, the brain’s rational part. This is the part of the brain that responds to situations with good judgment and an awareness of long-term consequences. Teens process information with the amygdala. This is the emotional part.

2. Scientists think that human brains are actually shrinking over time. When it comes to brain size, bigger doesn't always mean better. As humans continue to evolve, scientists say our brains are actually getting smaller. The experts aren't sure about the implications of this evolutionary trend.  Some think it might be a dumbing-down process. One cognitive scientist, David Geary, argues that as human society grows increasingly complex, individuals don't need to be as intelligent in order to survive and reproduce. 
3. The human brain is mostly water and dehydration can make it work poorly. Water is an indispensable part when it comes to an individual’s health and overall well-being. When you don’t drink enough water it leads to severe consequences. This, in turn, has a negative impact on your vital bodily functions. 
4. Your brain can't actually feel pain. The brain itself does not feel pain because there are no nociceptors located in the brain tissue itself. This feature explains why neurosurgeons can operate on brain tissue without causing a patient discomfort, and, in some cases, can even perform surgery while the patient is awake. 
5. Extreme dieting may lead your brain to eat itself. Autophagy is a natural process that cells normally use to break down parts that are no longer needed. 
6. The part of the brain responsible for memory is significantly larger in taxi drivers. This seahorse-shaped area lies in the core of the human brain, and animal studies had linked it to memory and spatial awareness. Species that store a lot of food tend to have a bigger hippocampus than those without the need to remember any burial sites. Maguire showed that the same applies to humans. 
7. The part of your brain that lets you see is actually nowhere near your eyes. Though it might seem counterintuitive, the part of your brain that allows you to see is actually about as far away from your eyes as possible. 
8. Contrary to the popular myth, you actually do use most of your brain. The myth has been perpetuated much like other urban legends. Movies depict characters capable of remarkable feats when the supposedly unused 90{65d74b771b6ceff07eaefc19ffed56e0ab6ea89ffc0f0b38516c35f1ac414386} of their brains are "unlocked." Well-intentioned people such as motivational speakers or teachers often cite the 10{65d74b771b6ceff07eaefc19ffed56e0ab6ea89ffc0f0b38516c35f1ac414386} myth as a way to demonstrate that all people should strive to live up to their full potential. Unfortunately, less well-meaning people have also used the myth to promote and sell products and services that they claim will unlock your brain's hidden abilities. 
9. When musicians play together, their brain waves synchronize. It turns out that making music together might have a measurable effect on our brains. By hooking up guitar players to electrodes, researchers at the Max Planck Institute for Human Development in Berlin discovered that the brainwaves of musicians synchronize when playing duets. 
10. Some blind people are able to "see" out of their ears (It is possible to "see" sounds). This means that blind people may "see" sounds in the same part of their brain that sighted people use to tackle visual information. 
11. Your brain activity is as unique to you as a fingerprint. Using a scan called an fMRI, scientists have been able to identify individual people by looking at their brains.

By examining the brain activity of more than 100 people,

Researchers discovered that a person's brain activity is as unique as a fingerprint. In the future, this information could be used to tailor neurological care to each patient.

Source: Yahoo/Wikipedia.