How to sleep: The hot drink that 'significantly' increases 'sleep time and efficiency'

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The Insomnia Severity Index is composed of seven questions that evaluate the severity of sleep disturbance during the past two weeks,

The Pittsburgh Sleep Quality Index is a self-report questionnaire that assesses sleep quality over a one-month time interval.

What did the researchers learn?

“Total sleep time (TST) was significantly increased in the Passionflower group compared with placebo,” they wrote.

What’s more, sleep efficiency and wake after sleep onset “significantly” improved after two weeks in the Passionflower group but there was no difference compared with the placebo group.



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