Kathryn is a Clinical Nutritionist and Certified Buteyko Breathing Practitioner and Oxygen Advantage® Advanced Instructor based in Sydney, Australia. She integrates functional breathing retraining with evidence-based nutrition and lifestyle support to address stress, sleep, respiratory health, and performance. Kathryn works with adults, athletes, and families, delivering one-on-one sessions and small group education with a calm, clinical, and whole-person approach. Her teaching emphasises practical application, safety, and helping clients build sustainable breathing habits that support everyday health and long-term resilience.