Cold exposure Expert Views

Cold exposure can be a helpful tool for people recovering from Long Covid, but it needs to be done carefully and tailored to the individual. Anna Marsh explains that cold stress might be more suitable for those who struggle with post-exertional malaise or are overstimulated by heat stress. She advises starting with short durations, like a 10-second cold shower, and gradually increasing exposure. Safety measures, such as entering cold water slowly, having a buddy, and warming up afterward, are crucial. Marsh also mentions combining heat and cold exposure for advanced recovery stages, but emphasizes that this approach is intense and should be treated like an exercise session.

The expert discusses the use of cold exposure as a treatment for Long Covid and chronic fatigue. Cold exposure is described as a hormetic stressor, meaning it can create positive changes in the body when applied in small, controlled amounts. The recommended dosage is 11 minutes per week of uncomfortably cold but safe exposure, such as cold showers or ice baths. This can help improve cortisol levels, stress resilience, and circadian rhythm, which may support better sleep. However, overdoing it can stress the adrenal glands, so starting with shorter durations and gradually increasing is advised. Safety precautions, like avoiding cold shock or drowning, are emphasized.

Dr. Mark Harper, a consultant anesthetist and cold water enthusiast, discusses the potential benefits and challenges of cold water exposure for individuals with Long Covid. He emphasizes the importance of listening to one's body, as symptoms and tolerance can vary daily. Dr. Harper advises warming up before entering cold water, ideally through exercise or a sauna, to help regulate body temperature. He also notes that factors like sleep, hormones, and prior activity can influence how well someone tolerates cold exposure. The key takeaway is to approach cold water exposure cautiously and adapt based on how one feels on a given day.

Dr. Mark Harper, a consultant anesthetist and cold water enthusiast, discusses the potential benefits of cold exposure for managing inflammation, which is a key factor in long COVID. He explains that cold water adaptation can help reduce excessive inflammation to moderate levels, which is beneficial for the body. Harper also highlights that inflammation is central to many chronic conditions, including long COVID, and that cold exposure might help regulate this process. Additionally, he notes that regular exercise, which also reduces inflammation, can enhance the effectiveness of COVID vaccinations.

Lorna Nicholson, a breathing expert and founder of PoTS UK, discusses the potential benefits of cold water exposure for people with Long Covid and related conditions like PoTS. She highlights that cold water exposure can help calm the nervous system, reduce inflammation, and improve mental well-being. Lorna emphasizes the importance of controlling breathing during cold water exposure, as it requires mindfulness and being present in the moment. She also advises caution, recommending that beginners seek guidance from experienced individuals and avoid starting in winter due to safety concerns.

Dr. Boon Lim discusses the benefits of cold exposure for individuals with Long Covid, emphasizing its positive effects on the autonomic nervous system. He suggests ending warm showers or baths with a cool finish to help reduce dizziness and palpitations. Additionally, wild swimming is highlighted as a beneficial activity due to its horizontal positioning, compression effects from water, and the refreshing cold temperature. These practices can improve blood flow and effort tolerance, aiding recovery.

Jackie, the host of the Long Covid Podcast, shared her recovery journey from Long Covid, emphasizing the importance of cold water exposure as part of her healing process. She explained that cold exposure was effective only after she had addressed her dysfunctional breathing patterns. Jackie highlighted that proper breathing techniques were crucial to avoid hyperventilation and potential risks like passing out in cold water. She also discussed how breathing exercises helped her manage symptoms like heart palpitations and influenced her autonomic nervous system, which plays a key role in regulating bodily functions.

Dr. Adrian Baker and Leanne discuss the benefits of cold water exposure, particularly through wild swimming, for individuals recovering from Long Covid. They highlight how cold water immersion can help improve breathing and reduce the body's stress response over time. Dr. Baker explains that the initial cold shock reaction, which causes hyperventilation, can be mitigated with gradual exposure and proper breathing techniques. Leanne emphasizes the importance of slow and controlled breathing when entering cold water, which can build confidence and make the experience more manageable. Additionally, Dr. Baker mentions the diving reflex, where cold water immersion slows the pulse and breathing, offering potential therapeutic benefits.

Anna Marsh discusses the use of cold exposure, such as cold showers, as a potential way to help regulate the nervous system and improve the cortisol awakening response for individuals with Long Covid or chronic fatigue. She emphasizes that this approach might not be suitable for everyone, especially those who feel shut down or frozen in the mornings. For these individuals, gentler methods to connect with the body or external surroundings may be more appropriate. Marsh also highlights the importance of understanding that as the nervous system becomes more regulated, symptoms might initially feel worse because individuals become more connected to their bodies.