It’s important to keep indoor humidity at an optimum level (45 to 65 percent). Dry air in the winter is one the main causes of sinus infections and sore throats. You can use a mechanical humidifier to add moisture to the air, but these devices require constant cleaning to prevent the growth of microorganisms. An [...]
This work is licensed under a Creative Commons Attribution-Share Alike 3.0 United States License. This site uses the excellent Thesis theme