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The nickname aside, this is unlikely to be the result of yoga asana practice, which rarely has people in this position for more than a few minutes. Perhaps if pranayama or meditation is done in this position it could cause this problem, but it would be rare. Martial arts, especially Japanese arts such as Aikido, use this position extensively (while in classes and for meditation) without this problem being a common issue. --Karinpower (talk) 02:35, 19 November 2014 (UTC)