The Yoga Bird Asana is a very efficient way to strengthen your back muscles and to give a good massage to your abdominal organs. It is suitable to advanced and beginners students. Highly efficient to prevent back problems! Demonstrated by Atmanshanti, Yoga Teacher and Performance Artist. More Information on Yoga Bird on http://www.yoga-vidya.de/Asana_Uebungsplaene/Ruecken-stark.html#Vogel