Yogi: When I sat meditation, I felt that the body was moving to the back.

Sayadaw: If you think that there is movement to the back or front, you’re thinking about direction, it is a concept. It is the thinking mind working.

If it’s the air element, it’s just the air element moving – it goes nowhere; just movement and gone, movement and gone. (Reality is always new.)

When the mind thinks of direction, it is a concept (idea or thought); it is the mind thinking.