The document delves into the role of the parasympathetic nervous system (PSNS) in human health, particularly focusing on its activation through physical touch such as cuddling, hugging, and massage. It highlights how PSNS helps in reducing stress, anxiety, and improving overall well-being, while also pointing out existing gaps in research regarding its specific mechanisms. The study aims to fill these gaps by exploring the connections between PSNS activation, behavioral responses, and psychological health.