Aerobic exercise makes you breathless, panting, and can increase your mucus production. Usually, there is no need to worry about congestion. However, be aware of your symptoms and specific triggers to determine if you can avoid discomfort in the future.

Your workout may cause excess mucus in the day after you finish your workout, so don't be surprised if your aerobics Exercise leads to prolonged effects and symptoms.
Breath Stimulation
When you exercise at moderate speed, your body needs more oxygen and increases your breathing rate. In contrast, your resting body breathes more slowly, which allows t to enter your nasal passages for wetting and warming before entering the lungs.
During exercise, you breathe more through the mouth than the nose, causing dry and cool air to enter the lungs directly. This will not only irritate your mouth, but will also dry the mouth tissue, causing excessive compensation for mucus after exercise.
Maintaining moisture during, during, and after aerobic exercise may reduce your symptoms.
[Allergen Exposure
When you are outdoors, you are exposed to allergens and irritants in the environment. In many people who are allergic to pollen or sensitive to movement in hot or cold weather, these factors can cause excessive mucus production, which may last for hours after the end of your workout.
[1]23] Even if you exercise indoors, you may still be exposed to irritants such as bacteria, strong perfumes and irritating cleansers in the air. All of these factors can cause mucus build-up, especially if you are sensitive or have moderate to severe allergies.Immune System Depression
Although exercise improves overall health and reduces the incidence of associated infections, prolonged exercise leads to a decline in immune system function. If your aerobic exercise lasts for more than 90 minutes, you may reduce the body's natural protective measures.
In a review published in the Journal of Applied Physiology in 2007, researchers studiedAthletes experienced respiratory irritation and infection ammation after exercise. Although these athletes are not ill, their long-term exercise results in decreased immune cells and increased inflammatory cells, resulting in increased post-exercise stimulation and increased production of mucus and sputum.
Read more [ 123]: Does exercise weaken the immune system? Diseases and Diseases
Because acute exercise suppresses the immune system within 3 to 24 hours after exercise, your mucus production may be caused by upper respiratory tract disease. Although this may not be serious, respiratory illness can lead to mucus secretion and other symptoms usually associated with colds and fever.
Although your symptoms may be mild, please note that you should take them seriously as they may be a more serious condition of the indicator. In bronchitis, swelling and inflammation of the air passage to the lungs leads to an increase in mucus production and may be exacerbated by aerobic exercise. If you notice that your mucus is yellow or green, you may have some kind of infection or disease. Even without this symptom, you can ask your healthcare provider about excessive mucus production to rule out any potentially serious health problems.