8-hour workday is in your genes

You've heard about circadian cycles but did you know that the thousands of genes in the body switch on and off over the 12-hour cycles governed by light and dark that set our waking an sleeping hours and eating habits.

Now scientists are finding that shorter cycles are also biologically encoded. 8 hour workday biologically wired

New research from the University of Pennsylvania and the Salk Institute for Biological Studies suggests that humans are biologically hard-wired to work only eight hours a day.

The standard work cycle appears to be programmed in the genes.