Why Do I Get Allergies After Running

After going for a run, I often find myself dealing with the unpleasant symptoms of allergies. It’s something I’ve wondered about for a while, so I decided to dive deeper into why this happens. It turns out that exercise-induced allergies are not uncommon, and there are a few reasons behind why some of us experience this discomfort.

The Role of Pollen

One of the main culprits behind allergies after running is pollen. When I’m out pounding the pavement, I’m breathing in more air at a faster rate than when I’m sitting still. This means that I’m also inhaling more pollen, which can trigger my allergy symptoms. The combination of increased breathing and exposure to airborne allergens can lead to an immune system response, resulting in symptoms like sneezing, runny nose, and itchy eyes. It’s frustrating to deal with, especially when all I want to do is enjoy a good workout.

Temperature and Humidity

I’ve also noticed that the weather plays a role in how severe my allergies are after a run. On hot, dry days, the pollen count tends to be higher, making it more likely for me to experience allergy symptoms. Additionally, exercising in cold weather can lead to breathing through the mouth rather than the nose, which bypasses the nasal filtration system and allows more allergens to enter the respiratory system. This combination of factors can make running outdoors quite challenging for someone like me who struggles with exercise-induced allergies.

Preventative Measures

Despite the challenges, there are some strategies I’ve found helpful in managing allergies while running. Firstly, checking the pollen count and planning my outdoor workouts accordingly has been crucial. I’ve also started taking antihistamines before heading out for a run, as they can help reduce my body’s reaction to allergens. Wearing a mask during high pollen days has also proven to be effective in reducing the amount of allergens I inhale while running.


As frustrating as it can be to deal with allergies after running, understanding the factors at play has helped me better manage my symptoms. Being mindful of pollen levels, weather conditions, and taking preventative measures has made a noticeable difference in my running experience. While it’s not always easy, I’m determined not to let exercise-induced allergies keep me from enjoying my runs.