Okay, so I can't sleep without a fan on. Even if its freezing cold, the fan in my room MUST been on, otherwise I'm up all night. I don't know why that is though. I guess its cause the sound is so soothing and calming. Without the fan on, its so silent and stuffy. I feel as if there's no space. Is It Normal?

Or perhaps it's the sensation of feeling and breathing in cool air which replicates a slight wind from outside?
I should try sleeping with a fan.