Spooky Ghostly Feelings Might Just Be Sounds You Can't Even Hear!

Scientists have discovered that super-low noises called infrasound [sound waves so deep that our ears can't pick them up] can actually trick our bodies into feeling scared or sad. When people were exposed to these secret vibrations, their bodies released stress hormones and made them feel like a spooky ghost was in the room. Isn't it wild that a sound you can't even hear can give you goosebumps?