hi then during deep sleep your getting hot we all do things like this during sleep me i sometimes scratch myself never feel a thing. so for you its your body getting hot so it takes your hoodie off just as simple as that i always find i cool down after i wake up so its then you want you hoodie back on. good luck
strange things happen when im asleep. when im in a deep sleep i somehow manage to take a hoodie off of me that i wear at night why does this happen im sensetive to the cold and i cover up with extra blankets.