00:00Scientists in Japan are testing an unexpected approach to improving sleep.
00:04The study focuses on hinoki, or Japanese cypress, and oil extracted from its roots.
00:09Researchers at Kyushu University studied 12 Japanese women between 35 and 60 years old.
00:16Each participant used hinoki root oil at bedtime for two weeks.
00:20They also completed two weeks using an unscented control.
00:24Participants inhaled three drops of the oil for 10 seconds before sleeping.
00:27Researchers reported fewer nighttime awakenings during the hinoki oil period.
00:32Morning assessments also indicated less sleepiness and better recovery from fatigue.
00:37Brainwave recordings showed increased delta wave activity around sleep onset after seven days.
00:43These slow waves are associated with deeper sleep.
00:46The researchers say the findings suggest hinoki root aroma may support sleep initiation and continuity.
00:52The roots are also often left unused after hinoki trees are harvested for timber.
00:57Scientists say further research is needed to determine appropriate doses and potential bedroom applications.
01:04Disclosure.
01:05This video contains stock footage and content created or enhanced using AI-assisted tools.
