Question: Some Masters teach that you should hold your spine erect. Is that always necessary?
Sri Chinmoy: In the beginning it is necessary. When one becomes a very advanced seeker it is not necessary. At that time one can do excellent meditation while lying down, while running, while jumping, at any moment. When one is advanced one does not have to maintain any particular posture. But in the beginning it is much better for the proper circulation of the breath to sit with spine erect. Once your consciousness goes far beyond the domain of the mind, it will not be necessary. Once you can go beyond the confusion of the mental world, you can take any posture. You can meditate anywhere and any way you want to. But in the beginning it is really advisable to sit with your spine erect.
Sri Chinmoy, AUM — Vol.II-5, No. 9,10, September-October 1978, Vishma Press, 1978