Later chapters examine the psychology behind the practice, from placebo response and self efficacy to its overlap with pornography use and moral guilt, and test the specific myths in circulation against available evidence, labeling each as supported, unsupported, or unresolved. A separate chapter reviews the benefits with research behind them, including which practitioners are most likely to experience them, alongside the documented risks and professional criticism the practice has attracted. A final chapter turns these findings into a practical, individualized approach for readers deciding whether and how to try it.
Written for practitioners, skeptics, partners, and curious readers alike, this book does not argue for or against the practice. It follows the evidence chapter by chapter, wherever it leads, and reports plainly where the science is settled, where it is contradicted, and where it remains genuinely unknown.