@linghamyogacentrum: This is great to strengthen your spine, make it flexible, bring space in-between your vertebrae column to allow more prana sakthi to flow in-between the joints and great for those who have cervical spindolysis and spinal vertebrae column problems....but must be done by an EXPERT.....and not any Tom & Dick Yoga Teachers.....they must have the Biological knowledge to handle this exercise..... please note....be blessed with Divine Health and Knowkedge... Aum Tattasthu Aum Sakthi