Zhineng Qigong self help does not have any side-effects. However, because Zhineng Qigong has very powerful healing effects, reactions occur more frequently than with other forms of healing. It is therefore especially important for Zhineng qigong practitioners to understand about reactions and know how to deal with them.
Reactions occur when sick Qi within the body begins to transform as part of the healing process, and impurities that have built up (often over a long time) are discharged. While health can improve without one necessarily experiencing any reactions, most people do have some reactions at some point on their path to better health.
Because reactions are a manifestation of unhealthy or impure Qi being dispelled, once they have passed, practitioners find themselves at a higher level of health and wellbeing than before and at a higher level in their Qigong practice.