Belief intensity plays a significant role in modulating physiological outcomes during Reiki sessions, particularly in individuals unfamiliar with the practice. Clients who hold strong positive expectations often exhibit enhanced relaxation responses, including reduced heart rate, lowered blood pressure, and improved heart rate variability. These effects are frequently mediated by placebo mechanisms, in which belief triggers neurochemical cascades that mirror real physiological change.
However, when clients receive Reiki without prior knowledge or expectation, their physiological outcomes tend to be more variable. Some may experience subtle shifts due to the passive relaxation environment, while others may remain physiologically unchanged if cognitive skepticism blocks the perception of benefit. Interestingly, some studies suggest that even unaware or skeptical participants can exhibit physiological changes, particularly if they are not actively resisting the session.
This suggests that while belief can amplify the efficacy of Reiki, it is not a strict requirement for physical response. The practitioner’s intention, presence, and energy alignment may still influence autonomic regulation even without client awareness. Further research could explore whether unconscious receptivity plays a role in energetic therapies and how belief and neutrality differ in their physiological expression.