Dr Rosalba Courtney is an osteopath and naturopath with a PhD in dysfunctional breathing and breathing therapy, and has incorporated intermittent hypoxic–hyperoxic training into her work since 2001. She developed Integrative Breathing Therapy and is internationally recognised for her research and practitioner training in breathing assessment and treatment.

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Her philosophy is that effective healing must be evidence-informed, personalised, and directed at the key factors that sustain health and recovery. She works particularly well with athletes, people with complex chronic illness, fatigue and dysautonomia, and those with longevity-focused goals.