Ok, so something really strange was happening last night. When I went to bed, it was a little bit cold, so I covered myself up with the sheets (I had slept without any coverage the nights before because it was just so hot). When I woke up at about 1am, it was so cold in my room, that I put the actual blanket into the sheets, so basically, like any normal person would sleep. It was so cold, but I cannot explain why. Maybe the nights get colder - at least the days so. Great. Unnecessarily bought a fan.