Pranayama Yoga for Health and Happiness The author wishes to emphasise that even though this book has been written in a simpli ed manner for the readers to practice at home, as far as practicable, 'Pranayama' should be learnt from a quali ed and experienced teacher at least in the initial stage of learning. e simpli ed scienti c explanation will certainly help readers in the absence of teacher to their advantage, however, it is advised, and before embarking on the practice of Pranayama yoga, the readers must take medical approval to ensure that nothing forbids them to practice certain exercises. It is also advised to follow the instructions carefully as mentioned in the book.