The human body possesses remarkable physiological mechanisms that help us respond to environmental challenges. One of these is the mammalian dive reflex (MDR), an automatic response that helps conserve oxygen during underwater immersion. The reflex involves slowing the heart rate and redirecting blood flow toward vital organs through coordinated activity of the sympathetic and parasympathetic nervous systems (Foster & Sheel, 2005; Panneton, 2013).
Interestingly, researchers have also explored whether activating aspects of this reflex through cold facial immersion may help reduce acute emotional distress. Preliminary findings suggest potential benefits for individuals experiencing panic symptoms, and related techniques are incorporated into Dialectical Behavior Therapy (DBT) distress-tolerance skills (Kyriakoulis et al., 2021; Linehan, 2015). Although promising, these approaches require attention to individual responses and medical safety.
Understanding the Mammalian Dive Reflex
The mammalian dive reflex is an evolutionary adaptation observed in mammals, including humans. It is particularly associated with facial immersion in water and breath-holding, although facial cooling alone may produce some related physiological responses.
The reflex involves three principal adaptations:
Bradycardia: A slowing of the heart rate mediated primarily through parasympathetic activity involving the vagus nerve.
Peripheral vasoconstriction: Narrowing of blood vessels in the extremities through sympathetic activation, helping preserve circulation to vital organs.
Oxygen conservation: Cardiovascular adjustments that reduce oxygen demands and help protect the brain and heart during periods of limited oxygen availability.
Importantly, the dive reflex does not simply switch the body from sympathetic activation to parasympathetic relaxation. Both branches of the autonomic nervous system participate in this response (Foster & Sheel, 2005; Panneton, 2013).
For a broader discussion of autonomic regulation, explore our article on vagus nerve relaxation.
The Sympathetic Nervous System and Crisis States
During periods of intense emotional distress, the body may experience heightened physiological arousal, including changes in heart rate, breathing, and muscle tension. These responses can make it more difficult to pause, reflect, and access familiar coping strategies. Emotional dysregulation, however, involves multiple psychological and physiological processes rather than sympathetic nervous-system activation alone.
Cold facial immersion has been investigated as a potential way to influence physiological arousal during panic. In a small experimental study, Kyriakoulis et al. (2021) found that participants with panic disorder experienced reductions in heart rate and self-reported panic symptoms following cold facial immersion. Although these findings are encouraging, larger studies are needed to establish clinical effectiveness and determine which individuals may benefit.
Consequently, facial cooling may be considered one possible distress-tolerance strategy rather than a guaranteed method of resolving emotional crises.
Implementing the Mammalian Dive Reflex in Counseling
Counselors may introduce facial-cooling techniques as part of a broader distress-tolerance approach, particularly when clients experience intense emotional arousal. These strategies are included in DBT skills training and may be used alongside other interventions that support emotional regulation (Linehan, 2015).
Safety considerations: Cold-water exposure can rapidly alter heart rate and blood pressure. Individuals with cardiovascular conditions, heart rhythm disorders, a history of fainting, or medical conditions affecting circulation should consult a qualified healthcare professional before attempting techniques intended to activate the dive reflex. Additional precautions apply to individuals taking medications that affect heart rate or blood pressure, those with eating disorders, and those with cold sensitivity. Cold-water techniques should never be used in ways that cause pain, breathing difficulties, dizziness, or chest discomfort (Linehan, 2015; Shattock & Tipton, 2012).
1. Cold Water Facial Immersion
Cold facial immersion is one of the methods used to elicit the human diving response. In DBT, the temperature-based distress-tolerance skill may involve briefly placing the face in cool water or using a cold pack against the upper cheeks and eye area (Linehan, 2015).
For individuals who have been medically cleared and appropriately instructed, brief facial immersion may be considered as part of a structured distress-tolerance practice.
Use comfortably cool rather than extremely cold water.
Avoid prolonged immersion or repeated breath-holding without appropriate clinical guidance.
Stop immediately if dizziness, chest discomfort, breathing difficulties, or other concerning symptoms occur.
Because individual cardiovascular responses vary, this technique should not be presented as universally safe or appropriate.
2. Cold Compress on the Face
A cold compress offers an alternative to facial immersion and is included in DBT temperature-based distress-tolerance practices (Linehan, 2015).
Apply a comfortably cool compress or cloth-wrapped cold pack to the forehead and upper cheeks.
Remain seated and notice any changes in physical sensations or emotional distress.
Avoid excessive pressure around the eyes or direct application of ice to the skin.
Remove the compress if it becomes uncomfortable.
Facial cooling may produce some physiological responses associated with the diving reflex, although the intensity of the response varies.
3. Ice Cube Method
Holding an ice cube or another cool object may provide a sensory-grounding experience by directing attention toward physical sensations.
However, cooling the hands or other areas of the body should not be considered equivalent to activating the mammalian dive reflex. This technique is better understood as a sensory-grounding strategy.
Avoid prolonged direct contact with ice, particularly when sensation or circulation is impaired. The purpose is to notice a temperature change, not to create pain.
4. Cold Shower or Splashing Cold Water
Gently splashing cool water onto the cheeks and forehead may provide facial stimulation associated with aspects of the diving response. Linehan (2015) includes splashing cold water on the face as one possible variation of the DBT temperature skill.
Cooling the wrists or taking a cool shower may also provide sensory stimulation, but these methods should not be assumed to produce the same physiological response as facial immersion.
Avoid sudden or extreme cold exposure, especially when cardiovascular or other medical concerns are present.
Clinical Applications in Counseling
1. Dialectical Behavior Therapy (DBT) for Emotional Regulation
The temperature component of DBT's TIP skills uses cold facial stimulation as one approach to reducing intense physiological and emotional arousal. TIP refers to Temperature, Intense Exercise, and Paced Breathing/Paired Muscle Relaxation. These techniques are intended to help individuals tolerate acute distress and create an opportunity to use additional coping strategies (Linehan, 2015).
Cold facial stimulation is only one component of TIP. Other skills, including paced breathing and paired muscle relaxation, may be more appropriate depending on individual needs and medical considerations.
2. Managing Panic Attacks and Anxiety
Preliminary research suggests that cold facial immersion may help reduce some immediate symptoms of panic. Kyriakoulis et al. (2021) observed reductions in heart rate and self-reported panic symptoms among participants with panic disorder following a brief cold facial immersion procedure.
These findings are promising but preliminary. The study involved a small sample, and further research is needed to establish the technique's effectiveness and safety across different clinical populations. Facial cooling should be considered a potential supplementary coping strategy rather than a replacement for established treatments for panic disorder.
3. Suicide Prevention and Crisis Intervention
DBT distress-tolerance skills are designed to help individuals manage periods of intense emotional distress, including situations involving urges toward harmful behaviors (Linehan, 2015). Temperature-based techniques may provide an opportunity to pause, reduce arousal, and engage additional coping strategies.
However, the mammalian dive reflex is not an independently established suicide-prevention intervention. These techniques should not replace suicide-risk assessment, individualized safety planning, professional crisis intervention, or emergency services when indicated.
4. PTSD and Trauma Recovery
Individuals experiencing trauma-related hyperarousal may benefit from learning a range of distress-tolerance and somatic grounding strategies. Facial cooling may be considered as one optional technique when medically appropriate and personally tolerable.
However, the evidence reviewed here does not establish the mammalian dive reflex as a treatment for PTSD. Trauma-informed application requires attention to personal preferences, bodily responses, and the possibility that sudden cold exposure may feel distressing rather than calming.
Example Applications
The following educational resources demonstrate facial-cooling and related distress-tolerance techniques. These demonstrations are intended to illustrate the practices rather than establish their effectiveness or suitability for every individual. Viewers should consider the medical precautions discussed above before attempting them.
These videos provide practical demonstrations, real-life applications, and additional insights into how MDR can be incorporated into mental health practices.
Conclusion
The mammalian dive reflex is a physiological response that helps conserve oxygen through coordinated activity of the sympathetic and parasympathetic nervous systems. Research suggests that cold facial immersion may also help reduce acute physiological arousal and panic symptoms in some individuals, although clinical evidence remains preliminary (Foster & Sheel, 2005; Kyriakoulis et al., 2021; Panneton, 2013).
Within counseling, facial-cooling techniques may offer an additional distress-tolerance strategy when used with appropriate medical precautions and individualized guidance. As part of a broader approach that includes somatic interventions, these practices may help some individuals manage moments of heightened distress. However, they should complement rather than replace established mental-health treatments, crisis interventions, or individualized safety planning.
References
Foster, G. E., & Sheel, A. W. (2005). The human diving response, its function, and its control. Scandinavian Journal of Medicine & Science in Sports, 15(1), 3–12. https://doi.org/10.1111/j.1600-0838.2005.00440.x
Kyriakoulis, P., Kyrios, M., Nardi, A. E., Freire, R. C., & Schier, M. (2021). The implications of the diving response in reducing panic symptoms. Frontiers in Psychiatry, 12, Article 784884. https://doi.org/10.3389/fpsyt.2021.784884
Linehan, M. M. (2015). DBT skills training manual (2nd ed.). Guilford Press.
Panneton, W. M. (2013). The mammalian diving response: An enigmatic reflex to preserve life? Physiology, 28(5), 284–297. https://doi.org/10.1152/physiol.00020.2013
Shattock, M. J., & Tipton, M. J. (2012). ‘Autonomic conflict’: A different way to die during cold water immersion? The Journal of Physiology, 590(14), 3219–3230. https://doi.org/10.1113/jphysiol.2012.229864
