Heavy media use interferes with sleep by reducing sleep duration.

大量使用媒体设备会缩短睡眠时间，从而干扰睡眠。

youdao

For example, sleep duration has declined from some 8 hours in the 1950s to 7 in recent years.

例如，睡眠时间从20世纪50年代的8小时左右下降到近年来的7小时。

youdao

bottom line is that adequate recovery-sleep duration is important for coping with the effects of chronic sleep restriction on the brain.

“说到底，充足的恢复性睡眠有助于消除长时间睡眠不足给大脑所带来的副作用”。

youdao

Bartfield said other factors include a person's hydration, sleep duration, sleep patterns and emotions.

CNN: Journaling helps woman lose half her body weight

Sleep duration did not significantly affect cancer risk for women of any age in the lower physical activity bracket.

CNN: Exercise plus sleep may lower cancer risk in women

Segmenting the data industry by industry, workers reported anywhere from 24.1% (other services, except public administration) to 41.6% (mining) incidence of short sleep duration.

WSJ: Making a Business Case for Bedtime