Yes, I've read that idea too; maybe also it was a scene from a movie, but I don't think it should be considered as an expression or story. It is a fact. I wasn't trying to be funny with my reply. There is a resemblance between out jetlag and this idea of letting the soul catch up with the body.
Edit: It's a story that just runs along world wide and must be based on facts.
"In the deep jungles of Africa, a traveler was making a long trek. Coolies had been engaged from a tribe to carry the loads. The first day they marched rapidly and went far. The traveler had high hopes of a speedy journey. But the second morning these jungle tribesmen refused to move. For some strange reason they just sat and rested. On inquiry as to the reason for this strange behavior, the traveler was informed that they had gone too fast the first day, and that they were now waiting for their souls to catch up with their bodies."
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