Reclining at the end of a day, spend a few minutes meditating while lying on the side. Keep the body quite straight and bend one arm up so that the hand acts as a support for the head. Sweep through the body, resting its stresses; or collect your attention on the breath, consciously putting aside memories of the day just past and expectations of tomorrow. In a few minutes, with your mind clear, you'll be able to rest well.