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Combined cold-water immersion and breathwork may be associated with improved mental health and reduction in the duration of upper respiratory tract infection - a case–control study

Jan Czarnecki, K. Nowakowska-Domagała, Łukasz Mokros

International Journal of Circumpolar Health March 21, 2024 DOI: 10.1080/22423982.2024.2330741 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Cross-sectional survey with case-control matching Peer reviewed
Sample size 77
Population Adults who regularly practice a specific training program (STP) involving ice-cold water immersion and breathwork, and a matched control group
Intervention ice-cold water immersion (CWI)
Topics Breathwork
Key findings The CWI-only group displayed better mental health indices and shorter URTIs compared to the control group, and the STP group displayed better general mental health, fewer somatic complaints, and shorter URTIs compared to the CWI-only group.

Abstract

ABSTRACT A polar plunge is a term referring to an ice-cold water immersion (CWI), usually in the winter period. It is also a part of a specific training program (STP) which currently gains popularity worldwide and was proven to display paradigm-shifting characteristics. The aim of this study was to compare the indices of mental functioning (including depression, anxiety, mindfulness) and duration of upper respiratory tract infection (URTI) measured among the study participants. A set of questionnaires was distributed via the Internet. Participants declaring regular STP practice were selected (N = 77). Two groups were matched based on a case–control principle: the first one (the control group) comprised participants who did not declare nor CWI practice, nor STP practice. The second one comprised participants declaring regular CWI practice only. The CWI only group displayed better mental health indices and shorter URTIs compared to the control group. Moreover, the STP group also displayed better general mental health, less somatic complaints, and shorter URTIs compared to the CWI only group. This study suggests the existence of CWI’s potential in boosting mental health and immune system functioning, however when complemented by a specific breathwork, this potential can be increased. However, further research is required.

Comparable studies

Other cross-sectional and survey studies on breathwork, most cited first.

Study Year Design Participants
User Experiences and Effects of Expert-Led YouTube Mind-Body Interventions on Insomniacs: A Survey Study. Users of expert-led YouTube-delivered mind-body interventions, mostly females in their 20s 2025 Retrospective survey n = 411
Side Effects of High Ventilation Breathwork: A Naturalistic Online Survey on Prevalence, Time Course, and Predictors Participants who have completed a recent HVB session 2026 Longitudinal online survey
High ventilation breathwork as a non-pharmacological model for inducing psychedelic-like states: expert evaluations of therapeutic potential and risk Mental health professionals participating in a high ventilation breathwork workshop 2026 Exploratory survey study n = 48
Exploring the benefits of altered states of consciousness and reduced experiential avoidance for mental well-being: insights from a global study on high ventilation breathwork Participants from 23 countries of residence who completed questionnaires in German or... 2026 Cross-sectional online study n = 324

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