Coffee can make you hear things.
If you end up needing to spend the night in a haunted house, you may want to bring a beverage other than coffee. A study conducted at Durham University in 2009 found that people who consumed at least 315 milligrams of caffeine (about three cups of brewed coffee) a day were three times more likely to hallucinate than people who drank less than that amount. Seeing things, hearing voices, and sensing the presence of ghosts were among the experiences reported by test participants. Spooky.
Coffee stimulates you.
Just 20 minutes after drinking a cup of coffee, you’ll begin to feel its stimulating effects. You can expect to experience a greater degree of alertness and be able to concentrate better on tasks.