As Pathanjali said, yoga must not be promoted thru books or media. Those who are interested must go to a proper guru who knows and should avoid the fakes. Pls note yoga could be equally destructive if not practiced properly...
The asanas shirshasana ( the head-stand ) has been termed by Osho to destroy intelligence. This is due to the flood of blood that enters the brain during headstand which destroys the delicate nerves in the brain.
This has been said by Osho in his book, "Awareness".
While shirshasana may promote health, it destroys the intelligence in the process.
Ideally it should be used only for extreme cases where one is suffering from grave ailments or diseases which Shirshasan can mitigate or aid in recovery.
This should also be mentioned to all aspirants interested in shirshasan.
