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Outdoor Exercise With Pollen Allergies (Nasal Allergies)
If you’re an exerciser who loves the outdoors but suffers from allergies, WebMD has tips to help you through pollen season.
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Allergy Basics
What Is an Allergy?
Allergies are an abnormal response of the immune system. People who have allergies have an immune system that reacts to a usually harmless substance in the environment. This substance (pollen, mold, animal dander, etc.) is called an allergen.
Allergies are a very common problem, affecting at least two out of every 10 Americans.