Researchers have found that light intensity can adjust the clock forward or backward by regulating the hormone melatonin.

研究人员发现，通过增强光亮调节褪黑激素可以将生物钟向前或向后调整。

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The majority must adjust their body clock for it.

大多数人必须为此调整自己的生物钟。

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Adjusting the clock is easy as the watch is the touchscreen, all you have to do is to touch the line, click adjust icon and slide current time line to correct time.

由于该表是触屏设计，所以调整时间也非常方便，你只需轻轻一点轨道，单击调整按钮，然后将轨道滑到正确的时间，一切就ok啦。

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Travellers on long-haul flights, for example to California, which is eight hours behind UK time, take about a week to recover as the body clock can only adjust by one hour a day, he said.

BBC: Body clock reset clue discovered

The reasoning behind this advice is that the average person can only adjust their internal clock by an incremental amount of 60 to 90 minutes a day.

BBC: Online calculators combat jet lag

Chief amongst them is the Wireless Command Center, an oblong remote control useable from anywhere in the home that lets users steer the Roomba, send it back to its base, schedule a cleaning and adjust its clock.

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