by Julie Fidler, Natural Society:
Sitting for long periods is bad for you – this isn’t anything you probably don’t already know. But a leading cardiologists’ group warns that even if you exercise, spending too much time on your tush still takes a major toll on your heart. 
Let me be specific: you can’t just exercise a couple of times a week and expect to make up for 5 straight days of sitting, according to the American Heart Association (AHA) panel.
Just How Big of a Problem is Sitting?
Deborah Rohm Young, chair of the AHA panel that wrote the new advisory, said:
“Based on existing evidence, we found that U.S. adults are sedentary for about six to eight hours a day.”
The older people get, the more time they’re likely to spend sitting. Young said:
“Adults 60 years and older spend between 8.5 to 9.6 hours a day in sedentary time.”
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