Be still and quiet your body. Relax from tip to toe. Keep your head, neck and back straight. If you are on a chair, place both feet flat on the ground with your hands limp on your lap. If you notice certain parts of your body that seem stiff and tense, consciously try to relax those parts.
Breathing is essential for natural life.
And the Breath of the Holy Spirit is essential for the spiritual life. Begin to be conscious of your breathing. At first, just notice it without trying to control it. Then gently let your breath become fuller and deeper. Breathe in and breathe out in a peaceful rhythm.