Distance Calories
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Work Cut Out for Us (Prevention)
One of the higher profile medical stories of the past week was the news that
work is increasingly workless- in the physical sense, that is. Physics
defines work as force times distance, and we apply ever less of the former, as
electrons traverse ever more of the latter on our behalf.
Specifically, the study published in PLoS One, and the media coverage
published everywhere else, tell us that the average man expends roughly 142
fewer calories per day at work, and the average woman expends 124 fewer, based
on an analysis of Department of Labor statistics from the 1960s to 2008.
The theoretical importance of this finding is that it helps to explain the
obesity epidemic, and a bit of number crunching quickly shows why. Assume
that everything other than energy expenditure at work stayed constant over the
past 4 decades (nonsense, of course, and we'll come to that shortly- but go
with it for now).
A man burning 142 fewer calories each of roughly 240 work days per year would
burn just shy of 34,000 fewer calories annually. Using the standard, if
somewhat inaccurate, 3500 calories per pound of body fat ...
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