Commanders at Creech say that if there is stress, it comes from relentless around-the-clock shift work.

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Melatonin is another popular way to help shift the body clock faster to a different time zone.

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Try not to think about this when you clock in for your next shift at the mall.

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Jet Lag Rooster encourages travellers to pace themselves accordingly, which means it may take a person travelling between Atlanta and Moscow about seven to 10 days to shift their body clock the necessary 10 hours.

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Jim Waterhouse, a professor of biological rhythms at Liverpool John Moores University in Liverpool, England, says he often recommends that people crossing three time zones or less and only staying three days or less might want to consider maintaining the same sleeping and waking schedule from home rather than trying to shift the body clock.

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The company said its new round-the clock service was to "support shift workers and the night-time economy".

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This month we honor the hotline workers who work the night shift to be there around the clock for victims in need.

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The International Agency for Cancer Research has previously identified working shift patterns that disrupt the body's natural "clock" as a probable cause of cancer.

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With its overall sales rising, Chrysler is adding a third shift at Belvidere, putting the plant on round-the-clock production.

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