The official version of where Rammstein got their name is that they named it after the town, Ramstein, where the worst air disaster in history occurred in 1988 at an air show at the American airbase. There was a collision of Italian aircraft that resulted in the deaths of 47 spectators and the injury of about 500 others.
If your home is 70 degrees inside and the temperature outside is under 20-40 degrees, you should keep the humidity under 40 percent. For each 10-degree reduction in the outside temperature below 20 degrees, the maximum humidity level inside should decrease by 5 percent.
The weather outside is not something that you can control, but the good thing is that you are able to control the humidity level in your bedroom or the entire house with a humidifier. For a healthy reasons humidity level should range between 30 and 50 percent. As an optimal humidity level for a bedroom is considered 45 to 50 percent. If you sleep in an area with a level lower than the recommended one, you may experience, irritation of the eyes, nose, and throat.