Fresh air helps with digestion, improves heart rate and blood pressure, cleans the lungs and strengthens the immune system, according to Good Relaxation. Enjoying time outdoors sharpens the mind, increases energy and promotes overall happiness. A short walk after eating is helpful for losing weight, and fresh air affects the amount of serotonin in the body, which promotes emotional well-being.
Breathing polluted air makes the body work harder to get the oxygen it needs, so individuals with high blood pressure benefit from avoiding unclean environments. White blood cells need oxygen to fight bacteria and kill harmful germs. Good Relaxation states that 20 percent of the body's oxygen is dedicated to helping with brain activity. Fresh air assists in clearer thinking and improved concentration. It helps airways in the lungs dilate more fully and expel airborne toxins.
Evolving Wellness adds that high oxygen levels in the body have also been shown to prevent cancer and decrease cancer growth. Indoor and outdoor air differs in quality. Indoors, there is a higher concentration of pollutants, so unless the air is regularly exchanged, it lacks the freshness needed to benefit the body. Breathing fresh air increases the efficiency of body reactions and is a key component in getting a good night's sleep.