Jet lag is like having a baby

My friend recently came from a trip with jet lag. Who would have thought that the mind numbing force has science to it both for and against it. A colleague, a regular on the east west hop, approximated the ordeal to be as long a day per hour time difference. That stumped me. More does this pseudoscience of Horary astrology.
I told the friend that there will be disruption in sleep and other activities.
'Its like having a baby' she says.