When a teacher instructs to "let awareness rest in the body ", the mind may confuse the instruction with interoception. The practitioner is then mislead into shifting cognition from visual or auditory cognition to somatic perception, while the teacher was pointing, not to the idea of the body, or the sensation of it, but something prior to representation: the field of presence that transcends all representations.
A better pointer would have been "let the body be the place where awareness forgets itself as a mind."