© Sonic Heal. Sonic Heal is for relaxation and general wellbeing. It is not medical advice and does not diagnose, treat or cure any condition. If you are pregnant or have epilepsy, heart, breathing or mental-health conditions, check with a doctor before breathwork. Do breathing exercises sitting or lying down, never in water or while driving. Breath patterns are inspired by the work of Wim Hof, Stanislav and Christina Grof, Konstantin Buteyko and Dr Andrew Weil; method names may be trademarks of their owners.