A propos de Yoga, une récente étude de 2010 montre et explique enfin l'origine du Yoga :
The Yoga Body: THE ORIGINS OF MODERN POSTURE PRACTICE par MARK SINGLETON chez Oxford University Press
Ce livre ravira celles et ceux intéressés par l'approche traditionnelle du Yoga, bien loin de l'aspect physique
et bien plus proche de l'aspect quête intérieure et méditative...attention, cela peut faire mal sur les certitudes assénées par les prof de yoga, lues ou entendues...

Introduction de l'ouvrage :
This book investigates the rise to prominence of āsana (posture) in modern,
transnational yoga. Today yoga is virtually synonymous in the West with the practice
of āsana , and postural yoga classes can be found in great number in virtually
every city in the Western world, as well as, increasingly, in the Middle East, Asia,
South and Central America, and Australasia. “Health club” types of yoga are even
seeing renewed popularity among affl uent urban populations in India. While
exact practitioner statistics are hard to come by, it is clear that postural yoga is
booming. Since the 1990s, yoga has become a multimillion dollar business, and
high-profi le legal battles have even been fought over who owns āsana . Styles,
sequences, and postures themselves have been franchised, copyrighted, and patented
by individuals, companies, and government, and yoga postures are used
to sell a wide range of products, from mobile phones to yoghurt. In 2008, it was
estimated that U.S. yoga practitioners were spending 5.7 billion dollars on yoga
classes, vacation, and products per year ( Yoga Journal 2008), a figure approximately
equal to half the gross domestic product of Nepal (CIA 2008).
However, in spite of the immense popularity of postural yoga worldwide,
there is little or no evidence that āsana (excepting certain seated postures of
meditation) has ever been the primary aspect of any Indian yoga practice tradition—
including the medieval, body-oriented haṭha yoga—in spite of the selfauthenticating
claims of many modern yoga schools (see chapter 1 ). The primacy
of āsana performance in transnational yoga today is a new phenomenon that has
no parallel in premodern times. yoga body
In the late 1800s,
a mainly anglophone yoga revival began in India, and new
syntheses of practical techniques and theory began to emerge, most notably
with the teachings of Vivekananda (1863–1902). But even in these new forms the
kind of āsana practice so visible today was missing. Indeed, āsana , as well as
other techniques associated with haṭha yoga, were explicitly shunned as being
unsuitable or distasteful by Vivekananda and many of those who followed his
lead. As a result, they remained largely absent from initial expressions of practical
anglophone yoga. In this study I set out to examine the reasons āsana was
initially excluded from most modern yogas and what changes it underwent as it
was assimilated into them. 3 With such unpromising beginnings, how did āsana
attain the standing it enjoys today as the foundation stone of transnational yoga?
What were the conditions that contributed to its exclusion from the vision of
early modern yoga teachers, and on what grounds was it able to make its
return?