An interesting discovery in psychology

Work activity before 10 am causes stress in the body: Discoveries in psychology sometimes confirm what we all know for so long: Dr. Paul Kelley (Oxford) published his research data in 2014 - the scientist studied the biorhythms of people of both sexes aged 20-55 years. According to the results of this study, the beginning of vigorous activity before 10 am is absolutely contrary to the natural rhythms of a person, he works inefficiently, gets tired faster and, in general, all this harms the global economy.