As promised, let’s continue listing the 5 other mysteries of mind. Brain Teaser comes the next. You should only laugh to make 3 parts of brain work. These are thinking part in order to get the joke, a movement area as it makes muscles move, and an emotional region - elicits the "giddy" feeling. Even though different scientists explain laughter in different ways, it is vivid that laughter makes us feel better.

And what do you think what is the next mystery? That is Nature vs. Nurture. The personalities we are is determined by...? Well, that is the question, thoughts and personalities are controlled by genes or environment? According to the scientists personality is possible to be the result both. According to my everyday observations, I guess genes play determining role in personality. There might be named thousands of examples.

What about age? That is an interesting issue. There is a questions scientists try to answer: why do humans age? Born with a robust toolbox full of mechanisms to fight disease and injury with ages turns into an empty box. According to the theories there might be two categories: The first - aging is a part of human genetics and is somehow beneficial, and the second - aging has no purpose and results from cellular damage that occurs over a person's lifetime.

Is there anybody who wants to live forever? May be not forever but cryonics could give some people two lives. According to the LiveScience, Cryonics centers store posthumous bodies in vats filled with liquid nitrogen at bone-chilling temperatures of minus 320 degrees Fahrenheit (78 Kelvin). What does it serve? It serves people of incurable diseases, who could be thawed and revived in the future when a cure has been found. That process is still the subject of the scientists study.

And finally what is consciousness? That is really great issue that the scientists are trying to deal with. Main question is how processes in the brain give rise to subjective experiences?

References:
http://www.livescience.com/health/top10_mysteriesofthemind-1.html