A study involving 63 healthy adults delved into how habitual sleeping positions, mainly right-side versus left-side, impact dream characteristics and subjective sleep quality. Participants were asked to record dream content, emotions experienced in dreams, and overall sleep quality using standardized tools, including the Pittsburgh Sleep Quality Index (PSQI).⁠ ⁠ The study disclosed a clear correlation between sleep side and dream experience. Left-side sleepers reported a higher frequency of nightmares and more intense negative emotions in their dreams. In contrast, right-side sleepers tended to experience more positive dream emotions, like relief, safety, and comfort. These emotional differences indicate that the lateral sleeping position may impact brain activity during REM sleep, possibly affecting emotional regulation and stress processing.⁠ ⁠ _____⁠ ⁠ Dream analyst Theresa Cheung told Sleep and Hypnosis:⁠ ⁠ "You can dream in any sleeping position, but there is a limited amount of s...