New research shows teens who go to bed earlier and get up earlier tend to be thinner and fitter than those who stay up late and sleep in. Scientists have known for a long time that proper sleep duration is connected to healthier metabolism, but a recent study has proven that it’s not just the amount of sleep teenagers get that matters, but when they get it.
Published in the journal, Sleep, the study found that of the 2,200 Australian children ages 9 to 16 who participated in the research over four days, the ones who went to bed and woke up later were 1.5 times more likely to be obese, according to a recent report in Time magazine. All of the subjects slept for the about same amount of time each night.
But, it remains unclear the role of lifestyle in the weight difference — whether later bedtimes lead to a more sedentary lifestyle, or whether teens who prefer sedentary activities, such as watching television and surfing the web, also prefer staying up late.
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