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As long as the body is not in perfect health, you think about it, and that prevents you from thinking of the mind. The sound mind is a sound body.

B. K. S. Iyengar (2016). “Sparks of Divinity: The Teachings of B. K. S. Iyengar”, p.49, Shambhala Publications
As long as the body is not in perfect health, you think about it, and that prevents you from thinking of the mind. The sound mind is a sound body.