According to the study, the most suitable temperature in the room should be kept at the room temperature of 18 degrees C, the relative humidity should be kept at 30 - 40%, and the relative humidity should be kept at 40 - 50% when the room temperature is 25.
Indoor humidity should not be too high or too low, indoor humidity is too high, the human body heat dissipation is more difficult. The humidity of the room is too low and the air is dry.