She also has a TED Talk on the subject.
Kring says it is a mistake for everyone to be forced to live by a nine-to-five clock because of differences in our chronobiology, the science of our circadian rhythms.
She says people are either A-persons, who naturally wake up early and are at their best in the morning; or B-persons, who prefer to sleep in and are most productive and creative later in the day.
Whether a person is an A or B depends on genetics and age.
She says younger people tend to be B-persons, which is why it has been shown that even a one-hour delay in the start time of school can be beneficial.
"There is more and more research showing that a later starting time in schools gives more sleep to the students and also higher grades," she said. Interesting
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