Spring awakens, the trees blossom, the days grow longer – and for millions of people, the suffering begins. Pollen allergies, also known as hay fever, affect approximately 15-20 percent of the population in Germany. For active people, this means that the most beautiful time of year for outdoor sports is simultaneously the most problematic.

Allergies develop when the immune system mistakenly identifies harmless substances – in this case, pollen – as a threat and overreacts. Symptoms range from bothersome to severely debilitating: runny or blocked nose, itchy and watery eyes, sneezing, fatigue, and in some cases, worsening of asthma.

Pollen levels vary greatly depending on region, weather conditions, and time of day. Knowing your triggers and understanding pollen patterns allows for strategic planning: when to train, where to train, and what measures to take.

This guide goes beyond the usual tips. It explains the connections, gives practical strategies for exercising during pollen season, and shows how you can stay active with a combination of avoidance, treatment, and timing.

Allergies are not curable, but they are very manageable. The goal is not to spend the season on the couch, but to lead an active life despite the allergy.

An allergic reaction is an overreaction of the immune system. Upon first exposure to an allergen (e.g., birch pollen), the body produces specific IgE antibodies – it becomes 'sensitized'. On subsequent exposures, these antibodies recognize the allergen and trigger a cascade of reactions.

Mast cells coated with IgE antibodies degranulate upon contact with an allergen, releasing histamine and other mediators. Histamine causes the typical symptoms: vasodilation (swelling, redness), mucus production, itching, and smooth muscle contraction.

The symptoms appear quickly (immediate reaction), but can also have a delayed component (late reaction after 4-8 hours with renewed inflammation).

Cross-allergies: People allergic to birch pollen often also react to certain foods (apples, nuts, cherries) – the proteins are similar. This isn't a new allergy, but an immunological cross-reaction. With grass pollen, it can be grains and tomatoes. Those affected should be aware of their cross-allergies.

The allergic march: Allergies often develop sequentially. Atopic dermatitis in infancy can lead to food allergies, which in turn can lead to hay fever, which can then develop into allergic asthma. Early and consistent treatment may slow this progression.

Genetics plays a role: If both parents have allergies, the risk for the child is around 60-80 percent. But environmental factors also influence whether allergies manifest.

Pollen levels don't remain constant throughout the year. Understanding pollen seasons helps with planning.

Early bloomers (February-April): hazel, alder, and especially birch. Birch is the most common and potent allergen among trees in Germany. Birch pollen can travel long distances – even areas far from cities are affected.

Grass pollen (May-August): The longest and, for many, most intense pollen season. Grasses bloom successively, with different species flowering over several months. The highest pollen count is usually in June.

Herb pollen (July-September): Mugwort and ragweed. Ragweed is an invasive neophyte whose pollen is particularly aggressive – even a few pollen grains can trigger symptoms.

Regional differences: Pollen levels vary depending on the region and altitude. In mountainous regions, the season starts later, in milder regions earlier. Local pollen forecasts are more accurate than general calendars.

Pollen forecast apps and services: The German Weather Service, the Pollen Foundation, and various apps provide daily updated forecasts. Use them to plan your outdoor activities.

Pollen levels vary with the weather: dry, sunny, windy days mean high pollen concentrations. After rain, the air is often temporarily cleaner – but not always (heavy rain can cause pollen grains to burst and release even more allergens).

Pollen concentrations fluctuate throughout the day and depending on the environment. Smart timing can significantly reduce exposure.

Time of day in the city: Pollen concentrations are often lower in the morning because the pollen grains settle overnight and the air is still cool. The highest levels are typically in the late afternoon and evening. Therefore, exercising early is often more beneficial.

Time of day in rural areas: Here the pattern is reversed – pollen is released in the morning when it gets warmer. Pollen levels are often highest in the early morning and evening. There may be a relative lull at midday.

After rain: Prolonged rain washes pollen out of the air. The hours that follow can be relatively symptom-free – a good window for outdoor sports. However: During thunderstorms or heavy rain, pollen grains can burst and release even more allergens ('thunderstorm asthma').

Places with less pollen: Coasts and islands (the wind comes from the sea), high mountains (above the tree line), cities may have less tree pollen than rural areas, but more traffic emissions that worsen allergies.

Indoor alternatives: On days with very high pollen counts, switch to indoor training – gym, indoor swimming pool, indoor cycling. Not ideal, but better than experiencing symptoms for days afterwards.

Wind and direction: Calm days often have less pollen in the air. Wind: If it comes from a forest or meadow, it carries pollen. Coastal winds or winds from the city are often lower in plant pollen.

Besides timing, there are specific measures that can reduce pollen exposure during sports.

Sunglasses: Protect the eyes from direct contact with pollen. Well-fitting (wrap-around) sunglasses block more pollen than regular glasses. An essential accessory for athletes with pollen allergies.

Nasal irrigation: Before exercise, a nasal rinse (saline solution) can moisturize the mucous membranes and wash out pollen. It can also be used afterward to remove pollen before it causes symptoms.

Nasal ointment or gel: A thin layer of petroleum jelly or special pollen blocker gel in the nasal vestibules can trap some of the pollen before it reaches the mucous membrane.

Headwear: Pollen gets caught in your hair. A cap or buff reduces this – and you bring less pollen home.

Tight clothing: Pollen accumulates less in tight-fitting sportswear than in loose, flowing fabrics.

After training: Shower and wash your hair immediately. Don't change out of your workout clothes in the bedroom or leave them there. Put them straight into the laundry. This will reduce your pollen exposure at home.

Use your car as a refuge: If you drive to the gym, keep the windows closed and use the pollen filter. The interior of a car can be a relatively pollen-free environment.

This section provides an overview – for individual therapy, please consult a doctor.

Antihistamines: Block the effects of histamine. Modern preparations (cetirizine, loratadine, fexofenadine, etc.) cause little to no drowsiness and can be taken preventively or as needed. Often the first choice for athletes – well-tolerated, few side effects.

Nasal corticosteroids: Anti-inflammatory nasal sprays (mometasone, fluticasone, etc.) are very effective for nasal congestion and become even more effective with regular use. They do not work immediately – 1-2 weeks of regular use are needed for full effect. No systemic side effects occur when used correctly.

Eye drops: Anti-allergy eye drops (cromolyn sodium, antihistamines such as azelastine) relieve itchy, watery eyes. Especially relevant for athletes – clear vision is important.

Leukotriene antagonists: Tablets (montelukast) used to treat asthma and allergies. Particularly helpful when both problems occur together.

Mast cell stabilizers: Cromoglicic acid as a nasal spray or eye drops – prevents the release of histamine from mast cells. Must be used regularly; good for prophylaxis.

Desensitization (hyposensitization): The only treatment that addresses the root cause. Over 3-5 years, increasing doses of the allergen are administered (injections or tablets/drops) to 'retrain' the immune system. This can significantly reduce symptoms in the long term and interrupt the allergic progression. It's a complex but worthwhile procedure.

Allergies not only impair well-being, but can also measurably reduce athletic performance.

Sleep: A blocked nose and itching disrupt sleep. Chronic sleep deprivation impairs regeneration and performance. Treating allergy symptoms is also a matter of sleep hygiene.

Respiratory system: A blocked nose forces mouth breathing, negating the benefits of nasal air conditioning. In allergic asthma, airway capacity is directly restricted.

Systemic effects: Allergic reactions involve inflammation. Chronic low-grade inflammation can impair regeneration and adaptation.

Fatigue: Many allergy sufferers feel exhausted during the season – the constant immune response drains energy. Some antihistamines (the older ones) can also cause drowsiness.

Concentration: Itching, sneezing, and general discomfort are distracting. This is a relevant factor in sports that require concentration (tennis, golf, precision sports).

The positive outlook: With good allergy management, most affected individuals can perform at their best. It requires a little more planning and attention, but allergies are no reason for limitations. Many top athletes have allergies and still perform at the highest level.

Doping relevance: Most allergy medications are not on the doping list. Exceptions: Some older systemic corticosteroids and pseudoephedrine (in some cold remedies). Competitive athletes should check the current WADA list.

Minimizing pollen exposure at home is important – you spend a lot of time there, and it's a place where you should be able to regenerate.

Ventilate strategically: In the city, ventilate in the morning (less pollen), in the countryside preferably in the evening. Ventilate thoroughly after rain when the air is cleaner. Pollen screens on windows reduce the amount of pollen entering when windows are open.

The bedroom as a sanctuary: Don't change out of your daytime clothes in the bedroom, wash your hair before going to bed, and change your bed linens more frequently during pollen season. The bedroom should ideally be pollen-free.

Air purifiers: HEPA filters can remove pollen from the air. Especially useful for bedrooms. Ensure the filter capacity is sufficient for the room size.

Drying laundry: Do not dry laundry outside – pollen settles on textiles and thus enters the house.

Vacuuming and mopping: Regularly, but with a vacuum cleaner equipped with a HEPA filter. Mopping removes pollen more effectively than vacuuming. Smooth floors are better than carpets (where pollen accumulates).

Pets: Dogs and cats that have been outside bring in pollen. After walks: Wipe paws, brush fur (outside), and keep pets out of the bedroom if possible.

Air conditioning: Can help because windows can remain closed. However: Regular filter maintenance is important, otherwise the air conditioner will become a breeding ground for germs.

In addition to acute symptom treatment, there are long-term approaches that address allergies more fundamentally.

Hyposensitization: As mentioned, this is the only causal therapy. Increasing doses of the allergen are administered over several years until the immune system becomes more tolerant. This can permanently reduce the severity of the condition and prevent the development of allergic asthma. The sublingual version (tablets/drops) is easier than injections.

Gut health: The connection between the microbiome and the immune system is being intensively researched. A diverse, healthy microbiome appears to protect against allergies. A diet rich in fiber, fermented foods, and avoiding unnecessary antibiotics all support gut health.

An anti-inflammatory diet includes omega-3 fatty acids, antioxidants, and minimally processed foods. While it hasn't been proven to directly influence allergies, it generally supports the immune system.

Stress management: Stress can exacerbate allergic reactions. The immune system becomes more sensitive under stress. Relaxation techniques and stress reduction can indirectly help.

Cold therapy: Anecdotal reports and small studies suggest that regular exposure to cold could modulate the immune system. The evidence is still weak, but it is an interesting area of ​​research.

Acceptance and adaptation: Allergies are chronic. Over time, you learn to recognize your triggers, find the best strategies for you, and navigate the season without major limitations. Experience is a valuable tool.

Can I even train outdoors during pollen season?

Yes, with the right strategies. Adjust the timing (after rain, at a favorable time of day), take medication preventively, take protective measures (goggles, nasal irrigation), and shower afterward. On days with extreme allergy activity, move indoors. Most allergy sufferers can actively manage the season.

Should I take medication even if I feel well?

If you have a known allergy during pollen season: yes, often advisable. Nasal corticosteroids work better with regular use than on an as-needed basis. Antihistamines can be taken preventively before pollen exposure. Don't wait until the symptoms are severe – by then the inflammation is already established.

Are there sports that are better suited for allergy sufferers?

Indoor sports reduce pollen exposure. Swimming in indoor pools can be beneficial (caution is advised for those with chlorine sensitivity). Sports requiring goggles (cycling, skiing) protect the eyes. Sports in low-pollen environments (water sports at the coast, hiking at high altitudes) may be less problematic.

Can exercise worsen my allergy?

In the short term, intense breathing during high pollen counts can bring more allergens into the airways and worsen symptoms. In the long term, regular exercise tends to have positive effects on the immune system. The key lies in management – ​​not in avoiding exercise altogether.

What is the difference between pollen allergy and allergic asthma?

Pollen allergy (hay fever) primarily affects the nose and eyes. Allergic asthma means that the allergic reaction affects the lower airways (bronchi) – coughing, shortness of breath, wheezing. Both can occur together. Untreated pollen allergy increases the risk of developing allergic asthma.

Does a pollen mask help during sports?

Masks can reduce pollen exposure, especially during periods of high activity. FFP2/N95 masks filter more effectively than cloth masks. Worth considering during periods of high activity, but uncomfortable during intense exercise. An option for light activities or very sensitive individuals.

Can I compete in sports if I have allergies?

Yes. Many elite athletes have allergies and perform at the highest level. Good preparation is key: optimize medications in advance, check doping compliance, and plan especially carefully for important competitions during the main season. Carry emergency medication with you.

What do I do if the symptoms are too severe despite everything?

Consult a doctor – the therapy may need adjusting. Consider desensitization for long-term improvement. On the worst days, train indoors or take a break – better than suffering through symptoms for days.

Do allergies develop further with age?

Allergies can develop, change, or even disappear over the course of a lifetime. Some people only develop hay fever in adulthood. In others, the symptoms subside with age. Sensitivity to certain allergens can also shift.

Are there natural alternatives to medication?

Nasal irrigation with saline solution is evidence-based and helpful. Some people report improvement from applying honey locally (to accustom the immune system to local pollen) – the evidence is weak. Quercetin, a natural antihistamine found in some supplements, has had mixed results in studies. Natural remedies can complement, but rarely replace, effective medications for more severe symptoms.