Arriving just after breakfast, our first stop was at the Hunger Analyzer station, where DoCoMo reps were on hand with a Bluetooth accessory that measures acetone levels, sending results to an app that determines not only if it's time for you to eat, but also whether or not your body is in a good position to burn fat with exercise.

ENGADGET: NTT DoCoMo bad breath, body fat and food analyzers hands-on (video)

The Dutch Health Ministry has advised the public not to eat German meat for the time being and local media in Belgium has reported that the government ordered the withdrawal of all German beef from shops.

CNN: New BSE case in Germany

This solution, however, has its own complications including the cost in time and money as well as the risk that the reindeer will not want to eat artificial food.

UNESCO: On the frontlines of climate change: Sami reindeer herders

He could not tell the time, relying on the sun's angle and his own instincts to know when to eat or sleep.

ECONOMIST: Benito Mart��nez Abrog��n

But very frequent travellers may not have that option - the constant transition from place to place leaves little time to take a walk, prepare and eat a healthy meal at home or stick with a training regimen at the gym.

BBC: Overweight frequent flyers