It wasn't for vacation, or relaxation.

CNN: Commentary: Where heroes come from

"If stress seems to be a trigger, cut back on your schedule, try a relaxation technique, don't plan a 12-hour day, " says Dr. Becker.

WSJ: Stopping a Migraine Before It Starts

And this is why relaxation helps: It isn't until we're soothed in the shower or distracted by the stand-up comic that we're able to turn the spotlight of attention inward, eavesdropping on all those random associations unfolding in the far reaches of the brain's right hemisphere.

WSJ: Jonah Lehrer on How to Be Creative

That is whether Mr Horta-Osorio is capable of working and living in a way that does not lead him to be deprived of sleep and relaxation - and allows him to do the job both effectively and in a way that doesn't take an excessive toll on him.

BBC: Lloyds' exhausted boss wants to return