Moreover, regardless of their beliefs about scent exposure, data from the sleep watches indicated that objective sleep improved when participants were actually exposed to their

partner's scent. "One of the most surprising findings is how a romantic partner's scent can improve sleep quality even outside of our conscious awareness," said Frances

Chen, the study's senior author and associate professor in the UBC department of psychology. Chen added: "The sleep watch data showed that participants experienced less tossing and

turning when exposed to their partners' scent, even if they weren't aware of whose scent they were smelling." The researchers say the physical presence of a long-term