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Hopefully this article will make you realize and value the health benefits of fresh air. And as a result, you will be spending a lot more time outside of the city. Here is a list of important health benefits of fresh air: 1  Fresh air is good for digestion. 2  Improves your blood pressure and heart rate.3  It makes you happier.4  Strengthens your immune system.5  Fresh air cleans your lungs.nd as a result, you will be spending a lot more time outside of the city. Here is a list of important health benefits of fresh air: 1  Fresh air is good for digestion. 2  Improves your blood pressure and heart rate. 3  It makes you happier. 4  Strengthens your immune system.
One of the best rules of thumb for residential fresh air requirements is 100 cfm for every 600 to 900 sq.ft. of living space. The number varies depending on the tightness of the home and the outdoor weather conditions.