Cold Plunge Temperature & Timing

Cold plunges and ice baths have gained popularity as an effective method for athletes and health enthusiasts to enhance muscle recovery, relieve inflammation, and boost overall mental health and well-being. Incorporating the right temperature and timing when using a cold water therapy is essential to maximize its potential benefits.

While cold plunging has been around for centuries, there is still much debate about the ideal temperature and timing for maximum the benefits of cold down. Some experts recommend a cold plunge temperature between 50-60°F (10-15°C), while others suggest below 40°F (4°C). Similarly, there is no consensus on the ideal length of time for successful cold plunge therapy, with some experts recommending just a few seconds, while others suggest up to 40 minutes.

In this article, we will explore the latest research on numerous benefits of cold plunge therapy and provide recommendations for optimal practices to achieve maximum benefits.

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Understanding how the combination of temperature and timing of ice bath can impact the effectiveness of cold plunge therapy is crucial for anyone looking to make the most of this refreshing and rejuvenating experience. Integrating these factors into a personalized cold plunge routine may help boost mental, emotional, and physical health in an enjoyable and invigorating manner.

cold plunge infographic showing ideal timing for cold therapy

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History and Principles

Cold plunging and ice baths have been used for centuries as a form of hydrotherapy to promote physical and mental well-being. The practice involves immersing the entire body part in cold water for a short period of time, typically ranging from a few seconds to a few minutes. This practice has been used by many cultures around the world, including the ancient Greeks, Romans, and Japanese.

The principle behind cold plunging is that exposure to cold water can stimulate the body's natural healing processes. The cold exposure causes the blood vessels in the skin and muscles to constrict, which helps to reduce inflammation, relieve pain, and improve blood flow and circulation. Additionally, the shock of the cold water can help to increase the body's production of endorphins, which are natural painkillers.

woman in an ice bath. temperature is very cold as there is ice around the late

Determining Optimal Temperature

There is still much debate about the optimal temperature for maximum benefits. Cold plunge temperatures can range from 35°F to 60°F (10°C to 15.5°C), depending on the individual's preference and tolerance. It is important to note that the temperature should not be so cold that it causes discomfort or pain. At the same time, the temperature should be cold enough to provide the desired health benefits anyway.

A randomized controlled trail, published in the Internal Journal of Sports Medicine in 2016 investigated the effects of 41°F vs 59°F  (5°C and 15°C) cold water immersion on muscle recovery following intense exercise. Athletes whom utilized cold water therapy had faster recovery times than the control group. Surprisingly, the study found a warmer cold plunge temperature (59°F /15°C) may be more effective than colder temperatures in promoting recovery from strenuous exercise.

The catecholamine (dopamine, epinephrine, etc.) increasing effects, however, can be accomplished through brief very cold temperatures of 35-45 F. These very cold temperatures can increase dopamine concentrations by 250%. Dopamine is known as the “feel-good” hormone because of the key role it plays in regulating mood, per the Cleveland Clinic

man engaged in cold therapy in a lake

Determining Optimal Timing

Studies have shown that the colder the stimulus, the shorter the amount of time needed for exposure to the cold.

For example, one study found that dopamine levels increased significantly and for a prolonged period when people were in cool water (60°F) for about an hour up to their neck, with their head above water. Other studies have shown that significant increases in epinephrine can occur after just 20 seconds in very cold water (~40°F).

For the most benefits, aim for a temperature where you can stand cold plunging between 2-5 minutes. It's important to listen to your body and not overdo it. If you start to feel uncomfortable or experience any pain, it's time to get out.

To aid in recovery and achieve the best results, consider the following guidelines for cold exposure timing:

  • Frequency: Ice bath sessions can be performed 2-3 times per week, depending on individual goals and recovery needs. Over time, you may increase frequency based on your cold tolerance and comfort.

  • Post-Activity: Engaging in cold water immersion within 30 minutes following intense physical activity may yield the most beneficial outcomes, as the body is still in recovery mode.

  • Rest: It is essential to allow for adequate rest and recovery between cold plunge sessions to avoid potential negative effects related to overexposure or cold. Adaptation is key for getting the most out of this therapy.

In summary, the ideal temperature for cold exposure varies from person to person, but the key is to aim for a temperature that is cold enough to be uncomfortable but safe to stay in. The colder the stimulus, the shorter the amount of time needed for exposure to the cold. As individuals become more accustomed to cold exposure, they can start to use colder water with more confidence. 

Specific Timing Strategies

Man in an outdoor ice bath

Pre-Workout Cold Plunge

A pre-workout cold plunge can provide various benefits, such as improving alertness, reducing muscle inflammation, and potentially enhancing athletic performance. A randomized controlled study found that a cold water plunge of 10°C prior to cycling may improve trial time. The timing and temperature of the pre-workout cold plunge are important factors to consider.

It is suggested to begin the pre-workout cold plunge around 30-60 minutes before the workout session. This allows enough time for the body to recover and adapt to the changes induced by the cold temperature. The duration of the plunge should be approximately 5-10 minutes

 

Post-Workout Cold Plunge

Post-workout cold plunge is widely used to speed up muscle recovery, reduce inflammation, and reduce soreness and joint pain following an intense workout session. This process could also aid in flushing out waste products from the muscles, and promoting oxygen and nutrient delivery. Recovery time and plunge temperature are crucial factors in making the post-workout cold plunge efficient.

The post-workout cold plunge is usually done immediately after completing the workout session. A duration of around 10-20 minutes is recommended for optimal recovery. The specific temperature of the post-workout cold plunge may vary based on individual preferences. Here's a brief guide to the process:

  1. Prepare the plunge pool or bath with a water temperature approximately 50°F - 55°F (10°C - 12.5°C).

  2. Submerge the body into the cold water, ideally up to neck level.

  3. Remain in the cold water for 10-20 minutes.

  4. Exit the water slowly and let the body dry.

  5. Consider additional recovery strategies, like stretching or mild exercises.

Pre-Meeting Cold Plunge

A pre-meeting or morning wake up cold plunge will focus on boosting brain function, catecholamine, and adrenaline. Aim for 35°F - 45°F for 1-3 minutes. Then go seize the day! The blood vessels constrict and the nervous system gets a jolt.

Remember to always consult with a healthcare professional before beginning a new cold therapy regimen.

Proper Breathing Techniques during an Ice Bath

Beginning with quality breathwork is crucial when preparing for a cold plunge. This can aid in mentally preparing you for your immersion in cold water. Before entering an ice bath, it's crucial to take a deep breath and then exhale completely.

Rushing into your ice bath can potentially shock your system, leading to a less than satisfactory cold plunge experience. Remember always to enter the water slowly, starting the timer once you are in. It is completely natural to experience an involuntary gasp as your body connects with the water. This gasp reflex is a result of the cold and shows how important breathwork during ice baths is. For this reason, I always recommend exhaling before cold plunges.

The ultimate aim during cold water immersion is to have your body submerged up to the neck. But there's not a problem if you can only partially submerge when starting out. If the cold feels overwhelming, slowly raising your chest out of the water can help.

Instead of focusing on how chilling the water feels, it's more beneficial to direct your thoughts on something you can control: your breath. Slow exhalations aid in steadying your heart rate, and deep, regular breaths improve circulation—a few benefits that should not be overlooked.

Once the timer goes off, slowly exit the ice bath. Again emphasizing "slowly", as quick movements might cause discomfort especially when you are shivering or feeling short of breath.

Bear in mind that timing in the water is based on your cold tolerance. As a beginner, starting with shorter exposure times of approximately 30 seconds to a minute is advised, allowing you to gradually increase the duration as your tolerance improves, better preparing you for your ice baths.

Post Workout Cold Plunge

Post-workout cold plunge is widely used to speed up muscle recovery and reduce soreness following an intense workout session. This process could also aid in flushing out waste products from the muscles, and promoting oxygen and nutrient delivery. Recovery time and plunge temperature are crucial factors in making the post-workout cold plunge efficient.

The post-workout cold plunge is usually done immediately after completing the workout session. A duration of around 10-20 minutes is recommended for optimal recovery. The specific temperature of the post-workout cold plunge may vary based on individual preferences. Here's a brief guide to the process:

  1. Prepare the plunge pool or bath with a water temperature approximately 50°F - 55°F (10°C - 12.5°C).
  2. Submerge the body into the cold water, ideally up to neck level.
  3. Remain in the cold water for 10-20 minutes.
  4. Exit the water slowly and let the body dry.
  5. Consider additional recovery strategies, like stretching or mild exercises.

Pre-Meeting Cold Plunge

A pre-meeting or morning wake up cold plunge will focus on boosting brain function, catecholamine, and adrenaline. Aim for a temperature of 35°F - 45°F for 1-3 minutes. Then go seize the day! 

Remember to always consult with a healthcare professional before beginning a new physical recovery regimen, including cold plunges.

icy water

Safety and Precautions

Potential Risks

Cold plunge therapy involves immersing oneself in cold water, typically ranging between 45 to 60 degrees Fahrenheit (7 to 15 degrees Celsius). However, this practice comes with potential risks that should be considered. Engaging in cold immersion or plunge therapy without proper acclimatization can lead to a cold shock to the body, potentially causing hyperventilation and increased heart rate. Individuals with underlying health conditions, such as cardiovascular issues, may experience complications in response to the sudden temperature change.

Further, extended exposure to ice baths can result in hypothermia, a dangerous drop in core body temperature. It is crucial to monitor the duration of exposure to ice bathing and be aware of symptoms like shivering, confusion, and drowsiness, which may signal the onset of hypothermia.

Recommendations

To minimize risks and ensure a safe experience, follow these recommendations when practicing cold plunge therapy:

  • Acclimate gradually: Start with shorter durations in slightly warmer water and progress to colder temperatures as your body becomes accustomed to the experience.

  • Buddy system: Have a responsible person nearby to assist or intervene if needed.

  • Consult a healthcare professional: If you have pre-existing health conditions or are unsure about the safety of cold plunges, consult with a medical professional for personalized advice.

Adhering to these guidelines will help ensure safety while participating in cold plunge therapy. Remember to prioritize your well-being, listen to your body, and always seek professional guidance if you have concerns

woman breaks ice in water

Closing Remarks

When it comes to timing, it is generally recommended to start with sessions lasting 3 to 5 minutes, gradually increasing exposure over time. However, individuals should always listen to their body's response and adjust the duration accordingly.

Some key points to remember:

  • Optimal cold plunge temperatures range from 45-60°F (7-15°C)

  • Start with sessions of 30 seconds to 1 minute and gradually increase over time

  • Always listen to your body and adjust the duration as needed

In cold plunge therapies, safety should remain a top priority. Users must be aware of their body adjust their personal limits and should exit the pool if any discomfort occurs. Moreover, individuals with pre-existing medical conditions should consult with a healthcare professional before engaging in cold plunge practices.

In summary, understanding the ideal temperature and time parameters for cold plunges can lead to a safe and effective experience. By following these guidelines, users can acquire the potential potential health benefits out of this age-old therapy, optimizing their physical and mental well-being.

Sources

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  3. Higgins TR, Greene DA, Baker MK. Effects of Cold Water Immersion and Contrast Water Therapy for Recovery From Team Sport: A Systematic Review and Meta-analysis. J Strength Cond Res. 2017 May;31(5):1443-1460. doi: 10.1519/JSC.0000000000001559. PMID: 27398915.
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  8. Stanley J, Buchheit M, Peake JM. The effect of post-exercise hydrotherapy on subsequent exercise performance and heart rate variability. Eur J Appl Physiol. 2012 Mar;112(3):951-61. doi: 10.1007/s00421-011-2052-7. Epub 2011 Jun 28. PMID: 21710292.