<p>Self-pleasure has been associated with various psychological and physiological benefits, yet its role in shaping sleep experiences is not well understood. This study aimed to examine the effects of self-pleasure on subjective sleep, emotional states, and dream experiences. A total of 301 participants completed the entire survey. Data were collected using self-reported measures of sleep-related perceptions, emotional states (via Affect Grids), and dream experiences. Statistical analyses involved T-Tests, Wilcoxon Signed-Rank Tests, and Spearman’s Rho Correlations. Self-pleasure was significantly associated with improved subjective sleep-related perceptions, including improved sleep quality, increased sleep duration and reduced sleep latency. The Affect Grids indicated significant improvements in emotional states immediately following self-pleasure and preceding sleep, with a sedative effect evidenced by reduced arousal levels. Following self-pleasure-related dreams, participants reported positive emotional impacts and small-to-medium increases in arousal levels. Weak but significant positive correlations were observed between self-pleasure frequency and the occurrence of erotic or sexual dreams. These findings highlight the diverse ways in which self-pleasure influences individual sleep experiences and contributes to the growing literature on intimate behaviours and sexual health.</p>