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The science of being scared: What happens to your brain, body when fear strikes?

Connor Schmidt’s smartwatch showed his heart rate climbing from 85 to at least 124 beats per minute as he walked through three haunted attractions.

  • KETV reporter Connor Schmidt wore a smartwatch to track his heart rate while visiting three Halloween haunted attractions, testing how the body reacts during frightening experiences.
  • Dr. Harmit Singh with the Creighton University School of Medicine explained that the brain acts as an "alarm system," triggering instantaneous stress responses that cause hearts to race and muscles to tense.
  • Schmidt's heart rate surged from a resting 85 beats per minute to at least 115 at the Haunted Castle, 124 at the House on the Hill, and 119 in the Haunted Forest.
  • Scare actor and acting coach Lucas Williams noted chainsaws are "the easiest thing to scare you," while Scary Acres owner Angela described attractions as an "immersive experience" designed to transport visitors into a horror-genre frame of mind.
  • Despite the physical stress responses, Singh noted that people often enjoy being scared when they recognize the environment is controlled, allowing them to experience the thrill without actual danger.
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The science of being scared: What happens to your brain, body when fear strikes?

Screams, chainsaws and terrifying characters are all part of the experience at haunted attractions. But what actually happens inside our bodies when we get scared?

·Oklahoma City, United States
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KCRA 3 broke the news in Sacramento, United States on Monday, October 26, 2026.
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