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.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

Part of our training has been spent inside special heat chambers at Liverpool John Moores University in a bid to combat the heat and humidity in Australia.

BBC: Jon Wilkin column