Why are we...? CLOZE #1

Target Language or Knowledge:

Daylight is at a premium these days, and if your family is anything like ours, your teenagers are having a hard time getting out of bed in the morning. “Delayed sleep phase” is what affects them: the maddening shift in circadian rhythms that causes adolescents to fall asleep and awake at ever-later hours. Adolescents need an average of 9.25 hours of sleep per night to support their developing brains, which are exploding at a rate akin to infancy. But we treat access to sleep as if it were an illegal drug, commonly requiring teens to start school at 7:00 a.m. or earlier.

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