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.

幸运是，昼夜节律不是一成不。

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

即使没有晨光，它们生钟也会告诉它们什么时候天亮。

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

这些叫做ipRGCs细胞负责调节昼夜节律。

This is thanks to circadian rhythms.

这归因于昼夜节律。

Plants, animals, and many microbes have circadian rhythms.

植、动和许多微生也都有昼夜节律。

But not everyone's circadian rhythm is the same.

但每个人昼夜节律不一定是一样。

You know a lot about circadian rhythms.

知道这么多和昼夜节律相关知识啊。

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

睡眠由脑内昼夜节律或生理时钟所管理。

The study showed how the body's circadian rhythm controlled the healing of wounds.

该研究展示了人体昼夜节律如何控制伤口愈速度。

Efforts to alter your circadian rhythm are likely to end in sleepy frustration.

试图改昼夜节律可能会以困倦和沮丧告终。

Giles Duffield, a biologist at the University of Notre Dame, who studies circadian rhythms.

圣母大学研究昼夜节律生学家贾尔斯·达菲尔德说到。

The scientists say that circadian clocks play an important part in healing.

科学家指出，昼夜节律在治疗方面有着重要作用。

So that's the beauty of your circadian system.

所以这就是昼夜节律系统美妙之处。

Just like humans, plants also have internal biological clocks, refer to as a circadian rhythm.

和人类一样，植也有内部生钟，也就是昼夜节律。

Most people are loosely familiar with sleep-related terms like REM cycles, deep sleep, and circadian rhythms.

大多数人不太了解睡眠相关术语，比如，快速眼动周期，深度睡眠及昼夜节律。

So a lot of that has to do with both the circadian rhythm and blood sugars.

所以这在很大程度上与昼夜节律和血糖有关。

One weight loss treatment currently in development aims to work by targeting your body's circadian rhythm.

目前正处于研发阶段减肥疗法旨在针对人体生理节奏达到效果。

Now, your circadian system can't just decide its bedtime and knock you out.

生钟无法确定休息时间，直接让进入睡眠。

So how does the sunflower circadian rhythm play a role in its sun-tracking behaviour?

那么向日葵昼夜节律是如何在它太阳追踪行为中发挥作用呢？