Avoiding light at certain hours also is important to help the body clock reset.
Melatonin is another popular way to help shift the body clock faster to a different time zone.
The body clock is reset subtlety every day by a combination of dawn light and evening light.
She said a number of factors might be involved, such as changes in body clock and social interactions.
Dr Akhilesh Reddy, a specialist in the body clock at the University of Cambridge, said the study was "interesting".
Dr Neil Stanley, a sleep expert at Norwich University Hospital, said the body clock was an incredibly complex system.
He counsels people that the best time to exercise is the one that works with their body clock and fits with their schedules.
"My body clock's all over the place and I played OK considering I haven't had much feeling with my swing lately, " said Yates.
Researchers are seeking ways to help the body clock reset itself in response to a trans-Atlantic flight, for example, or a night-time workshift.
Meanwhile the natural body clock was disturbed - some genes naturally wax and wane in activity through the day, but this effect was dulled by sleep deprivation.
Seeking out day light at certain times, and avoiding bright light at other times, are some of the main strategies researchers recommend for resetting the body clock faster.
Shortly after 9 he quietly slipped out, opting to skip a performance by jazz singer Cassandra Wilson in the interest of keeping his body clock on Moscow time.
The researchers showed that light was activating in the mice a protein, melanopsin, which also has a role in regulating the body clock, and is present in people.
Those who miss out on the correcting influence of either of these tend to fall into a spiral in which the body clock gradually becomes more and more out of synch with daylight hours.
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.
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.
Research into the effects of the human body clock is continuing in many different areas, which may help scientists understand why heart attacks are more likely to strike in the morning and asthma attacks at night.
He added the MRC had filed a patent for developing ways to manipulate cAMP with regards to body clock but there were 15 to 20 years of experiments before any drug would be available for human use.
Study leader Dr Michael Hastings said in mice who by a quirk of genetics had a 20-hr body clock, they were able to reset the clock to 24 hours by using known compounds that are known to slow down the action of cAMP.
Gene Block, a professor of psychiatry and biobehavioral sciences at University of California, Los Angeles, and colleagues found that by middle age, the signal the master body clock in the brain sends out to other internal clocks to help resynchronize the different processes gets weaker.
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.
For short trips, readjusting the body's clock might not seem worth the effort.
The idea of using supplements, at least in the US, is that by taking exogenous melatonin at appropriate times, you can succeed in resetting your body's clock and beat jet lag.
Using the least amount of light possible to get around helps avoid disturbing the body's circadian clock.
Impairment in the body's internal clock, ultimately disrupting a person's sleep-wake cycle, is just one of the potential symptoms of dementia.
Even relatively small amounts of light can reset the body's internal clock, so find as dark an environment as possible when traveling.
Its functions are vital to the regulation of the body's "circadian rhythms", whose powerful clock-like mechanisms synchronise the body with the 24 -hour period that is day and night.
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.
"Afternoon slump" the urge to nap at your desk after lunch is a normal dip in the body's 24-hour clock.
To avoid overpopulation, everyone has an electronic digital countdown tattooed on their arm, and when the clock runs out, the body shuts down (the rich, however, can buy extra time from the poor).
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