Dr Smith's team has mimicked Pavlov by training moths to stick their tongues out in response to a chemical called cyclohexanone, which was puffed at them while they were fed sugared water.

ECONOMIST: Robomoths | The

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

"We felt like we had a great team, a team with a lot of possibilities in training camp and we have to stick by it, " Chandler said.

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When Vick's property in Virginia was raided, 54 pit bull terriers were found, some with apparent dog fighting injuries, as well as training equipment like a treadmill and a stick used to pry open dogs' jaws.

BBC: NEWS | Americas | Brutal culture of US dog fighting

For instance, it was common for Jagr to leave his Upper West Side apartment in the evening and drive to the MSG Training Center in Greenburgh to hone his stick-handling and shooting skills after already having practiced with the team earlier in the day.

WSJ: Why Didn't the New York Rangers Keep Jaromir Jagr?

We would make the secure training appropriate to the young person and then having done that - which is a fairly sizeable stick - you send out the message to that person's peer group that you don't come back laughing from the courts but you can get taken away.

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