Meditation & conditioning of the body

I have heard the view that the body needs to be conditioned in order to be prepared for the stillness of meditation.

Well, speaking of preparing for stillness it's also necessary to de-condition the body, that is, to stop repeating the harmful habitual patterns of tensing and collapsing.

Perhaps it's necessary to use both approaches?

In AT the process of change helps to come back to the condition we once expressed in every action as a child - freedom, spontaneity and ease. In a similar way meditation makes us like little children. Child-like, but not childish.