A new study shows that teens who don’t receive enough sleep are at risk for chronic health issues later in life, according to Reuters.

Teens who slept the least during the week were most likely to be in the high-risk group. Additionally, those who slept at least two hours longer on the weekends were more than twice as likely to be in the high-risk group, compared to those who had more consistent sleep times throughout the week.

Kids in the high-risk group also tended to have a higher body mass index, which is a measure of weight in relation to height.

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