This book is based on the Buteyko Breathing Method, the most effective drug-free approach for treating adults and children with asthma. The Buteyko method was developed by Russian professor Konstantin Buteyko. It has been recognized by the Russian government as one of the greatest discoveries of the century and is now taught as part of the medical curriculum in Russia. Christine Byrne-Ralfs is one of the few certified Buteyko practitioners outside Russia to be certified by the original Buteyko Clinic, which is located in Moscow. She gives regular workshops on the Buteyko method in Canada. Patrick McKeown is one of the foremost experts on the Buteyko method and one of the few instructors outside Russia authorized to train Buteyko practitioners. He is seen regularly on TV and in other media.