The Science of Risk-Seeking

　　Sometimes we decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth tasking. __36__ Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say it may have to do with how our brains work.

　　The reason why any of us take any risks at all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring. __37__ As the quality of Risk-taking was passed from on ration to the next, humans ended up with a sense of adventure and a tolerance for risk.

　　So why aren’t we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today. So maybe you love car racing, or maybe you hate it. __38__

　　No matter where you are on the risk-seeking range, scientists say that your willingness to take risks increases during your teenage years. __39__ To help you do that, your brain increases your hunger for new experiences. New experiences often mean taking some risks, so your brain raises your tolerance for risk as well.

　　__40__ For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes active.

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