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          explore  
          
                                   
                 
                                      author：explore   
                                        
                                      
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browse：2774
                                  
                                    
          
                                    
            
          
 
          Why do we gasp, jump and go pale when we're frightened? It all comes down to a tiny, almond-shaped structure in the brain that's called the amygdala.																									Matthew Orr, Alex Hogan/STAT
          It feels like your body reacts a million different ways when you get scared — the blood rushes out of your face, you jump, you gasp, your heart starts racing.
          But what’s happening inside your body that makes you feel afraid?
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          It all comes down to a tiny, almond-shaped structure in the brain that’s called the amygdala.
          It’s responsible for kickstarting your “startle response.” That sends out a distress signal to the hypothalamus, and from there, your brain makes the call between fight and flight.
          Learn more about the science of fear in the new episode of “Boddities.”
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          Watch other “Boddities” episodes:
          Related:																			Episode 5: Why do bright lights make us see spots?															
          Related:																			Watch: Episode 4: Why do our ears pop?															
          Related:																			Watch: Episode 3: Why doesn’t your stomach digest itself?															
          Related:																			Watch: Episode 2: Why does it hurt to get water up your nose?															
          Related:																			Watch: Episode 1: Does drinking soda help settle an upset stomach?															
           
 
 
          

                              
          
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