Along with all the positive experiences and sensations that may be enjoyed in lucid dreaming, experiences of a painful nature may also manifest. Punching a wall in a deep lucid dreaming state will cause the same pain as if a wall had been struck in physical reality.
Some actions in lucid dreaming may unavoidably cause unpleasant feelings of pain; therefore, it is necessary to know how to avoid painful actions. Focusing on an internal confidence that pain will not result from an action will alleviate the problem. A practitioner may experiment with this type of focus by pummeling a wall while resolving that there is no pain. If the experiment succeeds, then obtaining the same result will never again require the same level of effort; thinking that lucid dreaming is painless will suffice.