“Many have been taught from childhood that night air is positively injurious to health and therefore must be excluded from their rooms. To their own injury they close the windows and doors of their sleeping apartments to protect themselves from the night air which they say is so dangerous to health. In this they are deceived. In the cool of the evening it may be necessary to guard from chilliness by extra clothing, but they should give their lungs air.

“On an autumn evening we were once traveling in a crowded car, where the atmosphere was rendered very impure by the mingling of so many breaths. The exhalations from lungs and bodies caused a most sickening sensation to come over me. I raised my window and was enjoying the fresh air, when a lady, in earnest, imploring tones, cried out: ‘Do put down that window. You will take cold and be sick, for the night air is so unhealthy.’ I replied: ‘Madam, we have no other air, in this car or out of it, but night air. If you refuse to breathe night air, then you must stop breathing. God has provided for His creatures air to breathe for the day, and the same, made a little cooler, for the night. In the night it is not possible for you to breathe anything but night air. The question is: Shall the night air we breathe be pure, or is it improved after it has been breathed over and over? Is it for our health to breathe the polluted night air of this car? The exhalations thrown off by the lungs and bodies of men steeped in tobacco and alcohol, pollute the air and endanger health; and yet nearly all the passengers sit as indifferent as though inhaling the purest atmosphere. God has wisely provided for us, that in the night we should breathe night air, and in the day, the air of the day. If we fail to answer the plan of God, and the blood becomes impure, our wrong habits have made it thus. But the air of night, breathed in the night, will not of itself poison the current of human life.’ Many are suffering from disease because they refuse to receive into their rooms at night the pure night air. The free, pure air of heaven is one of the richest blessings we can enjoy.” –Testimonies for the Church, vol. 2, p. 527–528

“In the cool of the evening it may be necessary to guard against chilliness by extra clothing; but there should be a free circulation of pure air through the room during sleeping hours. The free air of heaven, by day or night, is one of the richest blessings we can enjoy.

“Fresh air will purify the blood, refresh the body, and help to make it strong and healthy. The invigoration produced will be reflected upon the mind, imparting to it tone and clearness, as well as a degree of composure and serenity. It gives a healthful stimulus to the appetite, renders the digestion of food more perfect, and induces sound, sweet sleep. Living in close, ill-ventilated rooms, weakens the system, makes the mind gloomy, the skin sallow, and the circulation feeble; the blood moves sluggishly, digestion is retarded, and the system is rendered peculiarly sensitive to cold. One should so accustom himself to fresh, cool air that he will not be affected by slight changes of temperature. Of course he should be careful not to sit in a draft or in a cold room when weary, or when in a perspiration.

“Many labor under the mistaken idea that if they have taken cold they must carefully exclude the outside air, and increase the temperature of the room until it is excessively hot. But the system of one suffering with cold is deranged, the pores are closed by waste matter, and there is more or less inflammation of the internal organs, because the blood has been chilled back from the surface, and thrown upon them. At this time, of all others, the lungs should not be deprived of pure air. Judicious exercise would induce the blood to the surface, and thus relieve the internal organs. The power of the will is a great help in resisting cold, and giving energy to the nervous system. To deprive the lungs of air, is like depriving the stomach of food. Air is the food that God has provided for the lungs. Welcome it; cultivate a love for it, as a precious boon of heaven.” –Christian Temperance and Bible Hygiene, p. 104–105

Ellen G. White