Body scanning - right way of attention moving
When I do a body scan, I do a visualization of a "golden nectar" slowly filling my body from the toes all the way to the top of my head. This is a way of helping you keep a focus of attention to the body. For me, sometimes as I am doing this technique, there is a sensation of warmth that I feel or think I feel as my attention to the body scan grows.

I hope this also helps a bit during your meditation practice.