This is what scientists recently found after they tested 100 mice by subjecting them to live on confusing schedules of light and darkness.
The test represented the stress of travel on long international flights, as well as the punishing rotating shifts of certain occupations (think doctors and nurses in a hospital, for example).
They found that 83 percent of old mice survived under the normal schedule, 68 percent lived after eight weeks of shifting steadily backward, but fewer than half --- 47 percent --- survived when the lights regularly came on six hours earlier.
When they speeded the schedule up, changing the light schedule every four days, even more mice died.
[SOURCE: REUTERS, 06 Nov 2006 ]
Isn't it about time that companies and bosses start thinking about re-engineering working schedules?