If the bedroom has a balcony or floor-to-ceiling windows, it will also increase the energy consumption during sleep, and people are prone to fatigue and insomnia, because the glass structure cannot preserve human heat. This is the same reason that sleeping in the open air is easy to get sick.
Solution: Choose a room without balcony or floor-to-ceiling windows as a bedroom, or hang thick curtains on the balcony and floor-to-ceiling windows for shelter.