“For curing an illness,
Prāṇāyāma practice of at least 24 breaths
should be done several times each day
– ideally eight times.
All other unnecessary physical activities should be curtailed.
Food should be limited to liquids – primarily milk;
and hot, dry foods avoided.
Breathing practice should be done without the aid of any tools or instruments.”
–  T Krishnamacharya’s commentary to Yoga Sūtra Chapter One verse 34