Why and how it's secreted - It's produced and secreted in the kidneys and serves the purpose of helping humans cope with distress.
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Improved eyesight - When adrenaline is secreted, people's vision improves. This is understood as an evolutionary response to danger.
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Thinking fast - It helps us make decisions much faster because it stimulates neurons to fire off two to three times faster.
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Karaoke - Unless you've got a voice like Mariah Carey or are completely wasted, then the likelihood is that public karaoke will scare you into getting an adrenaline rush.
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Stand-up - Another rather terrifying activity is stand-up comedy. The idea of being heckled off stage will surely have you weak at the knees.
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Auditions - Most of us would be at our nerves' end at the thought of showing up to a blind audition at our local theater.
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Speed - Rollerblading might look rather safe, but speed is dangerous. Always wear protective gear and minimize risk of a serious injury.
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Dying your hair - If you're in any way conservative, then this can be pretty frightening, especially if it's a bold and unusual color.
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Shaving it all off - This one is sure to give you a rush! You ought to be prepared though, because once that razor hits your head there's no going back...
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Getting a tattoo - Tattoos are known to be addictive. They're also painful and kind of scary, and are known to produce an adrenaline rush.
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Watching a scary movie - This is the most common way in which people give themselves a rush. Just turn on Netflix and away you go!
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Reading a scary book - Maybe movies aren't your thing. Books can be even more frightening with our rich imaginations.
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Rooftop bar - If you're afraid of heights, then going to rooftop bar with your friends for a drink might just do the trick.
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Take a risk - Taking a risk might mean making a bet (although it's not advisable for many), committing to an investment, or trying to change jobs.
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Caffeine - Drinking a cup of coffee helps stimulate the adrenal glands to release adrenaline.
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Make the challenge real - Try setting yourself a tremendous challenge, physical or otherwise, and then texting everyone about it.