t may be the secret to some of the most lithe and bendy bodies around, but yoga, as loved by celebrities from Matthew McConaughey to Natalie Portman, may also be the cause of a host of severe injuries.

A new book, published next month, lifts the lid on some of the darker sides of the physical and mental stretching techniques - and from back traumas to strokes, the discipline is not without its dangers, writes author William J Broad.

The Science of Yoga: The Risks and the Rewards, out next month, pulls together medical studies and case studies from those who have met with disastrous ends rather than the feel-good flexibility the practice normally affords.

n an adaptation of the book in the New York Times, Mr Broad recalls meeting Glenn Black, a yogi with classic Indian Iyengar training.

Mr Black, a yoga teacher of nearly 40 years, made the admission that he believes that 'the vast majority of people' should give up yoga. He recently underwent back surgery to correct decades of damage from the discipline. More... (Source: Daily Mail)