Perhaps it is an effective way to clear out the lungs and get rid of built-up mucus. When we breathe in cold air, it causes a reflex reaction in our lungs, which helps to clear out mucus.
The cold air also helps with clearing the nasal passages by causing a reflex called “the vasoconstriction response” which narrows the blood vessels and prevents fluids from draining down into your throat. This also reduces inflammation and swelling in your nose and sinuses, as well as helps to prevent infections from spreading.
Your body uses energy to help fight infection, especially when it’s cold outside. During winter, the body’s ability to produce white blood cells increases in response to the increased demand for immune defense cells, resulting in stronger defenses against infection and illness. Cold weather can actually help you burn calories. Cold weather has a way of making the bodywork a little harder to maintain an equilibrium, which can lead to increased calorie expenditure.
Winter is a dormant season in all senses. Since the temperature drops in winter, most of the dust and allergens stay on earth reducing allergies. The season also sees a decline in the insect count, making it relatively bug-free. So when you walk outside in winter you are more likely to breathe fresher air and feel much more relaxed and rejuvenated.
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