Page 83 - Are You Future Ready?
P. 83
Chapter One - To Know the Present
Through the Past
Sideline
/ Big data on sleep /
Fitbit announced last year that it had collected 6
billion nights of anonymous sleeping data from
users, accompanied by their gender, age, weight,
height, location and weekday activity, to understand
the lives of Americans, including:
Male vs. Female
Women sleep an average of 6 hours and 50 minutes
per night, 25 minutes more than men. However,
women are 40% more likely to have trouble falling 081
asleep.
Old vs. Young
Many elderly people have insomnia, and Fitbit's data
shows that when people are 20, they are getting half
an hour more deep sleep a night than when they are
70.
Weekday vs. Weekend
Many city dwellers go to bed late on weekends. The
Americans go to bed 64 minutes later on weekends,
that is, one may go to bed at 11p.m. on weekdays,
and go to bed after midnight on Saturdays and
Sundays. The researchers call it "social jetlag".
