晚睡的人很难坚持运动 should

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Late sleepers more sedentary and find it harder to exercise, study found. Nightowls also make up more reasons not to be active.

研究表明，晚睡的人都有久坐不动的习惯，很难坚持运动。夜猫子们也为自己不运动找了很多理由。

Adults should take 150 minutes of moderate-intensity exercise a week.

Night owls who wake up late are less likely to take exercise.

Latest research suggests night owls are more sedentary and feel that they have a harder time maintaining an exercise schedule.

Results show that later sleep times were associated with more self-reported minutes sitting, and sleep timing remained a significant predictor of sedentary minutes after controlling for age and sleep duration.

However, people who characterized themselves as night owls reported more sitting time and more perceived barriers to exercise, including not having enough time for exercise and being unable to stick to an exercise schedule regardless of what time they actually went to bed or woke up.

'We found that even among healthy, active individuals, sleep timing and circadian preference are related to activity patterns and attitudes toward physical activity,' said principal investigator Kelly Glazer Baron, associate professor of neurology and director of the Behavioral Sleep Medicine Program at the Feinberg School of Medicine at Northwestern University in Chicago, Illinois.

'Waking up late and being an evening person were related to more time spent sitting, particularly on weekends and with difficulty making time to exercise.'

The research abstract was published recently in an online supplement of the journal Sleep, and was being presented Wednesday, June 4, in Minneapolis, Minnesota, at SLEEP 2014, the 28th annual meeting of the Associated Professional Sleep Societies LLC.
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