Everyone knows that the room should be normal humidity (60%). If it is lower, it is possible to speak about dry air. And this is not good for health.
So why it is so dangerous dry air?
1. Diseases. Due to the dry air, people are prone to drowsiness and fatigue. Lack of oxygen is very dangerous for human health. Also, dry air may cause common colds. This is due to the fact that the self-cleaning of the bronchial tubes is deteriorated. It is possible that due to the dry air in the air can increase the amount of dust, which may already lead to allergies.
2. Condition of the skin. The skin condition can worsen (peeling can begin).
3. Mucous membranes. Mucous membranes also are in a stressful condition. Maybe start stinging in the eyes (especially in this sensitive people who wear contact lenses).
4. Minimum performance. In a dry room availability is reduced to zero.
To increase the humidity, it is necessary to ventilate the room more often and buy a special device for humidifying the air in the room.