Plants, animals, and many microbes have circadian rhythms.

植物、动物和许多微生物也都有昼夜节律。

You know a lot about circadian rhythms.

你知道这么多和昼夜节律相关的知识啊。

The circadian rhythm is like a clock or timer.

昼夜节律就像钟表或计时器。

Luckily, the circadian rhythm isn't set in stone.

幸运的是，昼夜节律不是一成不变的。

Even without morning light, their circadian rhythms told them when dawn should be breaking.

即使没有晨光，它们的生物钟也会告诉它们什么时候天亮。

But not everyone's circadian rhythm is the same.

但每个人的昼夜节律不一定是一样的。

This is thanks to circadian rhythms.

这归因于昼夜节律。

The cells, called ipRGCs, are responsible for regulating circadian rhythms.

这些叫做ipRGCs的细胞负责调节昼夜节律。

Hormonal differences like these determine how you experience your circadian rhythm.

这样的荷尔蒙差异决定着你的生物钟的效果。

Sleep is regulated by your circadian rhythm, or body clock, located in the brain.

睡眠由脑内的昼夜节律或生理时钟所管理。