Published on 10/08/2019 10:2 | Source: ANI

Optimistic people sleep better, longer: Study

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A recent study discovered that people who are the most optimistic tend to be better sleepers. The study was published in the journal of Behavioral Medicine. Participants' levels of optimism were measured using a 10-item survey, which asked them to rate on a five-point scale how much they agreed with positive statements such as "I'm always optimistic about my future" and with negatively worded sentences such as "I hardly expect things to go my way." Scores on the survey ranged from six (least optimistic) to 30 (most optimistic). Participants reported on their sleep twice, five years apart, rating their overall sleep quality and duration during the prior month. The survey also assessed their symptoms of insomnia, difficulty falling asleep and the number of hours of actual sleep they obtained each night. A subset of the participants was part of an ancillary sleep study based in Chicago and wore activity monitors for three consecutive days - including two weeknights and one weekend night. Participants wore the monitors on two occasions a year apart.

The monitors collected data on their sleep duration, per cent of time asleep and restlessness while sleeping. Hernandez and her co-authors found that with each standard deviation increase - the typical distance across data points - in participants' optimism score they had 78 per cent higher odds of reporting very good sleep quality. Likewise, individuals with greater levels of optimism were more likely to report that they got adequate sleep, slumbering six to nine hours nightly.

And they were 74 per cent more likely to have no symptoms of insomnia and reported less daytime sleepiness. Although a significant and positive association was found between optimism and better-quality sleep, Hernandez suggested that the findings should be interpreted cautiously. While the scientists aren't sure of the exact mechanism through which optimism influences sleep patterns, they hypothesise that positivity may buffer the effects of stress by promoting adaptive coping, which enables optimists to rest peacefully.