Long Covid, Exhaustion & Cold Therapy

That Unfamiliar Feeling of Exhaustion

Imagine you are walking up a familiar path, perhaps one of the gentle rolling hills here in the Allgäu. Before, the incline was a pleasant challenge, a way to get your heart rate up. But today, halfway up, you have to stop. Your legs feel like lead, your breath is ragged, and a profound, bone-deep weariness washes over you. It is more than just being tired; it is an exhaustion so complete it feels like a power failure. This is an experience many people report after a Covid-19 infection, a lingering shadow that can affect every aspect of daily life. For those navigating this new reality, the search for ways to manage symptoms and support the body's recovery is a primary concern. This has led many to explore complementary approaches, including whole-body cold therapy, as part of a wider wellness strategy.

Understanding Long Covid and Profound Exhaustion

What you may be experiencing has a medical name: Post-Covid Condition, or more commonly, long covid. The World Health Organisation defines it as the continuation or development of new symptoms three months after the initial SARS-CoV-2 infection, with these symptoms lasting for at least two months and with no other explanation.

While long covid can present a vast array of symptoms, one of the most common and debilitating is profound fatigue or exhaustion. This is not the normal tiredness you feel after a long day. It is often described as:

• Overwhelming and not relieved by rest or sleep.
• Unpredictable, with "crashes" occurring after even minor physical or mental effort. This is known as post-exertional malaise (PEM).
• Accompanied by "brain fog", difficulty concentrating, and memory problems.
• Often joined by other physical symptoms like muscle aches, joint pain, headaches, and shortness of breath.

This condition is not a sign of weakness or a failure to "get over" the illness. It is a recognised, complex medical issue rooted in physiological changes that the initial infection has left behind.

The Physiological Maze: What Causes This Fatigue?

Researchers are working intensely to understand the precise mechanisms behind long covid fatigue. While a single cause has not been identified, several interconnected factors are believed to play a role. Understanding these can help to see where supportive therapies might fit in.

A primary theory centres on persistent, low-grade inflammation. The initial Covid-19 infection can trigger a massive immune response, sometimes called a "cytokine storm". In some individuals, the body's inflammatory response does not fully switch off after the virus is cleared. These lingering inflammatory messengers, or cytokines, can continue to circulate, contributing to feelings of malaise, pain, and fatigue.

Another area of investigation is the autonomic nervous system. This system controls all our automatic bodily functions, such as heart rate, blood pressure, and digestion. In some people, Covid-19 appears to disrupt its regulation. This can lead to symptoms like a racing heart upon standing (POTS, or Postural Orthostatic Tachycardia Syndrome), dizziness, and an inability to properly regulate the body's stress and recovery responses, which can be utterly exhausting.

There is also growing evidence of mitochondrial dysfunction. Mitochondria are the tiny powerhouses within our cells, responsible for generating the energy we need to function. Research suggests that the SARS-CoV-2 virus may directly damage mitochondria or disrupt their ability to produce energy efficiently. If your cells cannot generate enough power, a state of profound physical and mental exhaustion is an understandable result.

Finally, theories involving persistent viral reservoirs, where fragments of the virus hide in tissues, and the formation of tiny microclots that impede oxygen flow to tissues are also being actively explored. It is likely that for many people, a combination of these factors is at play.

The Path to a Diagnosis

If the symptoms described here feel familiar, the first and most important step is to consult your GP. There is no single test for long covid. A doctor will typically make a diagnosis based on your history of a confirmed or suspected Covid-19 infection and the persistence of characteristic symptoms.

The process is often one of exclusion. Your doctor will want to run tests to rule out other conditions that can cause similar symptoms, such as thyroid problems, anaemia, or other chronic illnesses. They will listen to your experiences, assess your functional limitations, and help you to form a picture of your condition. It is vital to receive a proper medical assessment. Self-diagnosing can be risky, and the services provided at our studio in Memmingen are for wellness and recovery support, not for diagnosis or medical treatment. A clear diagnosis from a healthcare professional provides the foundation for any management plan.

Established Management and Support

Currently, there is no single cure for long covid. Medical management focuses on supporting the patient, treating individual symptoms, and helping the body to recover over time. The cornerstone of this approach is a concept called "pacing". This involves carefully balancing activity and rest to avoid triggering post-exertional malaise. It means learning to listen to your body, recognising your energy limits, and stopping before you "hit a wall".

Other established paths include:

• Specialist physiotherapy to help with breathing exercises and very gentle, carefully monitored movement.
• Occupational therapy to find strategies for managing daily tasks with limited energy.
• Psychological support to cope with the significant mental and emotional toll of a long-term illness.
• Medication to manage specific symptoms like pain, sleep disturbances, or heart rate irregularities.

This comprehensive, medically supervised approach is the primary framework for care. Within this framework, some people choose to explore complementary therapies that may help to manage symptoms and support the body's underlying physiology. This is where a modality like whole-body cold therapy comes into consideration.

The Potential Role of Whole-Body Cold Therapy

Whole-body cold therapy involves very brief exposure, typically two to three minutes, to extremely cold, dry air in a specialised chamber, with temperatures around -110 °C. It is a powerful physiological stimulus, and its potential supportive role in the context of long covid exhaustion lies in its effects on some of the systems we discussed earlier.

The primary interest is in its potential to modulate inflammation. The intense cold exposure triggers a strong anti-inflammatory response from the body. As persistent inflammation is a leading suspect in long covid symptoms, a therapy that may help to recalibrate this system is of significant interest.

Furthermore, the brief, intense cold stimulus acts as a powerful jolt to the nervous system. This is thought to stimulate the vagus nerve, a key component of the parasympathetic nervous system, which is our "rest and digest" system. By activating this pathway, cold therapy may help to counterbalance an overactive "fight or flight" response, potentially improving the regulation of the autonomic nervous system that can be so disrupted in long covid.

Many of our guests also report a significant, albeit temporary, reduction in muscle and joint pain after a session. For those living with the persistent aches that often accompany long covid fatigue, this relief can be very welcome. Additionally, the release of endorphins and norepinephrine during the session often leads to an immediate feeling of improved mood and alertness, which can provide a welcome mental lift. It is crucial to see whole-body cold therapy not as a standalone solution, but as one potential piece of a larger, personalised puzzle, to be used alongside and in support of medical advice and pacing strategies.

What the research shows

When considering whole-body cold therapy for long covid, it is important to be clear: there are currently no large-scale clinical trials that have specifically studied its effects on this condition. The research we have provides clues based on its effects in other contexts, from which we can cautiously infer potential mechanisms. We must be careful not to overstate these findings.

One key area of interest is inflammation. A study investigating the effects of ten sessions of cryostimulation on healthy men measured markers including interleukin-6 (IL-6), a pro-inflammatory cytokine. The study found a decrease in IL-6 levels, suggesting that repeated cold exposure may have a systemic anti-inflammatory effect [1]. While this is promising, we must remember this was observed in healthy, active young men, not in individuals with a chronic post-viral condition. However, it does provide a plausible physiological basis for why cold application might help to address the inflammatory component of long covid. Reviews of cryotherapy in athletes also consistently highlight its effects on inflammatory markers as part of the recovery process [5, 6].

The most relevant research on fatigue comes from a study on patients with multiple sclerosis (MS), a neurological condition where debilitating fatigue is also a primary symptom. In this study, MS patients underwent ten sessions of whole-body cold therapy. The researchers found that the treatment resulted in a statistically significant improvement in functional status and a reduction in feelings of fatigue, which persisted for several weeks after the final session [2]. While long covid and MS are different conditions, the symptomatic overlap in terms of profound, central fatigue makes this a noteworthy finding. It suggests that cold therapy's benefits for fatigue may not be limited to a single disease and could be related to its broader effects on the central nervous system and inflammatory pathways.

Another related area is oxidative stress, which is an imbalance between damaging free radicals and the body's ability to counteract them with antioxidants. This is also thought to play a role in the cellular dysfunction of long covid. Research has shown that a series of whole-body cryostimulation sessions in healthy men can lead to an increase in the body's total antioxidative status, suggesting it may bolster the body's natural defences against this type of cellular stress [4].

It is vital to acknowledge the limitations of the current body of research. Many studies, like those on inflammation and oxidative stress, were conducted on small groups of healthy people [1, 4]. The study on MS patients was larger but not blinded, meaning participants knew they were receiving the treatment, which can introduce a placebo effect [2]. The transferability of findings from athletes or other patient groups to the unique context of long covid is not guaranteed. More specific research is needed. Therefore, any potential benefits must be viewed as theoretical but grounded in observed physiological responses.

Whole-Body Cold Therapy in Practice: Your Session in Memmingen

Deciding to try a session can feel like a big step, so it helps to know what to expect. When you visit our studio, your wellbeing is our priority. We begin with a thorough conversation to understand your situation and to check for any contraindications.

For the session itself, you will change into minimal, dry clothing like shorts and a top, and we will provide you with gloves, socks, shoes, and a headband to protect your extremities. You then step into the main chamber. The air is cooled using an advanced vortex system, not liquid nitrogen, ensuring a safe and evenly distributed cold. The temperature is set to -110 °C, but because the air is completely dry, it feels less biting than a damp, windy winter's day.

You will be in the chamber for a very short time, typically around three minutes. During this time, you are encouraged to move gently, turning slowly on the spot. Our trained staff are with you for the entire duration, observing you through a window and communicating with you. The initial shock of the cold quickly gives way to a unique, energising sensation. As your skin temperature drops rapidly, your body initiates a powerful set of physiological responses [8]. After your time is up, you step out and your body immediately begins to warm itself up. Many people describe a feeling of tingling freshness, mental clarity, and a noticeable lightness in their limbs.

Important Considerations and Contraindications

Safety is paramount, especially when dealing with a complex condition like long covid. Whole-body cold therapy is not suitable for everyone. There are several absolute contraindications, meaning you should not use it if you have:

• Severe or unstable heart and circulatory conditions (e.g., recent heart attack, unstable angina, pacemaker).
• Untreated high blood pressure.
• Peripheral arterial occlusive disease.
• Severe anaemia.
• Cold allergy (cold urticaria).
• Acute febrile illness.

For those with long covid, particular attention must be paid to autonomic dysfunction. If you have been diagnosed with or suspect you have POTS, where your heart rate spikes on standing, it is essential to discuss cryotherapy with your specialist. The significant shifts in blood vessel constriction and dilation could potentially exacerbate symptoms. Likewise, if you experience Raynaud's phenomenon, where fingers and toes become numb and change colour in the cold, this therapy requires extreme caution and medical approval.

Always consult your doctor or specialist before beginning any new complementary therapy, including whole-body cold therapy. They can help you weigh the potential benefits against any personal risks.

Frequently asked questions

How might cold therapy help with long covid fatigue?

Whole-body cold therapy is being explored for its potential to support the body's systems. It may help by modulating the body's inflammatory response and stimulating the nervous system, two areas thought to be involved in the profound exhaustion of long covid.

Is whole-body cold therapy a cure for long covid?

No, absolutely not. It is a non-medical, supportive wellness application that may help manage some symptoms like pain and fatigue. It must be considered as part of a comprehensive management plan supervised by a healthcare professional.

How many sessions are recommended for someone with long covid?

This is highly individual and depends on your body's response. The key is to start very slowly, perhaps with just one session, and see how you feel in the following days. Pacing is crucial, and it is better to do too little than too much.

What does the cold session actually feel like?

It is an intensely cold but very dry and brief experience, lasting only about three minutes. Most people find it invigorating rather than uncomfortable. Afterwards, you may feel a rush of warmth, mental clarity, and a reduction in aches.

Are there specific risks with cold therapy for long covid?

Yes. It is vital to get medical clearance, especially if you have heart rate or blood pressure issues like POTS, which can co-occur with long covid. The therapy is not suitable for people with certain cardiovascular conditions or a known allergy to cold.

Why is medical advice so important before trying cold therapy?

Your doctor understands your full health profile and the specifics of your condition. They can identify any underlying risks that would make whole-body cold therapy unsafe for you and can ensure it fits appropriately into your overall care plan.

More on Health & immune system

• A Guide to Cold Therapy for Post-Surgery Rehabilitation
• A Guide to Immune Resilience & Cold Therapy