Dahn Yoga on practice and movements
It is important to practice meridian exercise in a way that is suitable for your body. For example, a fit person can train more intensely, whereas others should practice the movements much more gently. Even ill and very fragile oler people can benefit from gently rubbing and massaging the whole body while breathing and focusing on conscious awareness. In the beginning, try to master the movements first, rather than attempting to harmonize your breathing with the movements. Practice the movements according to your breathing capacity (without straining) when you are familiar enough with the movements to do them very naturally.
From Dahn Yoga meridian exercise by Ilchi Lee