This light-dark cycle is good for our bodies to predict changes in the environment.

这种光暗循环有助于我们的身体适应环境的变化。

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Half were housed in a standard light-dark cycle of 16 hours of light (at 150 lux) followed by eight hours of total darkness.

其中一半田鼠被封闭起来并做周期性的光照实验，每个周期先用150 勒克斯的光照持续照射16个小时，然后完全黑暗持续16个小时。

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Their activities were recorded continuously. Result the change of spontaneous locomotor activity and leukocyte count were synchronized with the light-dark cycle.

结果小鼠自发运动活动周期与光暗循环周期一致；不同光暗周期对小鼠外周血白细胞计数及分类计数有不同影响。

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Over the eight-week period of the experiment the mice in the first and third groups gained almost 50% more weight than those exposed to the natural light-dark cycle.

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"The good news is that people who stay up late in front of the television and computer may be able to undo some of the harmful effects just by going back to a regular light-dark cycle and minimizing their exposure to artificial light at night, " Bedrosian says.

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