 Your heartbeat increases. Your pupils dilate to adjust to the dark. You see a staircase ahead of you. You run up the rest of the way, not looking behind you. You turn on the light and your heart unclenches. Fear is an interesting thing, isn't it? So interesting that we at Psych2Go are here to give you five weird facts about being scared. One, some people prefer the treat while others prefer the trick. That's right, some people like being afraid. They watch horror movies, they ride roller coasters, and they often take us along for the ride. But why do these people like being scared? Isn't fear an inherently a negative emotion? When scared, our instinctual survival response kicks into action. This floods our body with hormones and neurotransmitters, making us stronger and faster. Adrenaline is a hormone that plays a huge factor and gives us the rush some people crave. Fact number two, most of our fears are nurture and not nature. We are born with two innate fears, heights and loud sounds. Most other fears are learned. As children, we learn that snakes are scary based on the surrounding adult's reactions to snakes. Three, the more scared you are, the scarier things appear. Once scared, your heartbeat is increased and you're on red alert for danger. This makes your body more jumpy than usual, at least until the fight or flight response wears down. Four, fear guides decisions. Do you ever catch yourself going for the safe choice? Everyone does. Fear stops us from doing things we may want to do. And funnily enough, it also guides us into doing things we don't want to do. As a species, we're more scared of the stick than we want the carrot. And in a lot of cases, the stick doesn't even exist. Five, we can literally smell fear off of other humans. We can tell when others are scared from what their sweat smells like. Although this is all unconscious, so you can't exactly sniff your friend's armpit during a scary movie. Even though we may not realize through our noses, our brain can tell when specific fear chemicals are released from your pure sweat. Fear plays a huge part in our lives, from roller coasters to skydiving. Do you like it? Does it control you? Do you smell other people's armpits? Please share with us in the comments below. And finally, please don't smell other people's armpits. Don't forget to subscribe and let us know what video you want to see next. Thanks for watching.