Exercise not enough to undo harms of sedentary lifestyle, study shows

The American Heart Association says even bursts of exercise may not counter the unhealthy effects of sitting too much. Cardiologist Dr. Tara Narula joins "CBS This Morning" to discuss the new warnings about sedentary lifestyles.

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LivingBelow15withPenny: I try my best to move all day. 5 days out of the week i work standing, lifting and walking plus I workout. It's my two days off that I need to put in more effort to stay active.

John Dodge: Does this mean I should move my beer chiller away from my bed? Will walking ALL the way to the fridge be enough? Is breathlessness from typing a good or bad sign?

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Exercise not enough to undo harms of sedentary lifestyle, study shows

Exercise not enough to undo harms of sedentary lifestyle, study shows

The American Heart Association says even bursts of exercise may not counter the unhealthy effects of sitting too much. Cardiologist Dr. Tara Narula joins "CBS ...