Did you know that an adrenaline rush is no less refreshing than a cup of coffee? Your blood pressure gets higher, your pulse becomes faster, and you feel more energized. If you’d like to experience deeper sensations while reading this article, turn on a horror movie soundtrack, especially when you see the photo of an uninvited guest behind the window.
GIGGAG found 21 photos that will really give you the chills.
Which photo did you find the scariest? Tell us in the comments below.
Preview photo credit ADisturbinglyAttractiveCactus / imgur