Because of something called adrenaline! When we are scared our body goes into something called fight or flight mode which means we will either get scared and fight something or we will want to run away from it (flight) because you can’t run away in something like the nightmare realm (assuming you’re talking about the scarey halloween house?) we get frightened instead!
Well the main reason we feel scared is because we see or hear something that makes us anticipate harm. So we jump because we think we are going to get hurt! Say you’re walking through the Nightmare Realm and a spooky person jumps out at you. That spooky person acts as a stimulus (or a trigger) that triggers a signal in your brain.
The signal that is sent travels to the base of the brain (into the amygdala), and this fires a brain chemical called glutamate out into two other regions of the brain.
The first region of the brain makes us freeze or involuntarily jump. These reactions are so automatic because the signal is sent deep into the base of the brain to an area that we have little control over.
The second region gives us our fight or flight instinct, by pumping adrenaline through our bodies. This gives us the rush when we feel scared!
So its our brain trying to protect us that makes us feel scared!
thanks for the question – the girls have covered the biological and physical responses that trigger fear and why we have fear as an emotion! not sure what else to add!
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