ProblemIt has been demonstrated that birth without medical intervention conveys significant physical and psychological benefits to the mother and her newborn baby. However, there is a need to include women's subjective experience of physiological birth to understand and promote it. BackgroundThe theoretical concept of “birthing consciousness” hypothesizes that women during natural childbirth sometimes experience a specific altered state of consciousness, which is a positive peak experience that resembles “flow” in many aspects. AimTo investigate the underexplored connection between the physiological mode of childbirth and altered states of consciousness during childbirth. MethodsIsraeli women with childbirth experience were recruited through social media (Facebook groups with a focus on childbirth and motherhood). Participants (n = 766) completed an online survey: the Flow State Scale (FSS) and a demographic questionnaire. FindingsDifferences were found between modes of birth as to flow state, as women who experienced physiological childbirth (i.e., with no epidural anesthesia or instrumental interventions) had a higher flow state during birth. DiscussionThis link empirically confirms the phenomenon of birthing consciousness. All nine dimensions of the mental state of flow apply to childbirth: challenge-skill balance, action-awareness merging, clear goals, unambiguous feedback, concentration on the task, sense of control, loss of self-consciousness, transformation of time, and autotelic experience. ConclusionUnderstanding a women's subjective experience during physiological birth can enhance clinical understanding of physiological birth thus promoting positive physiological birth experiences – which has crucial health benefits. We propose that more studies need to be done to promote experiencing flow during physiological birth.