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Just Three Hours of Sitting Can Damage Your Blood Vessels

Excessive Sitting

Story at-a-glance -

  • After sitting for three hours, arterial dilation fell by up to 33 percent in 7- to 10-year-old girls
  • A 1 percent decline in vascular function is known to increase heart disease risk by 13 percent in adults
  • In adults, sitting for hours leads to constricted arteries in your legs, which impedes blood flow, raises blood pressure, and contributes to the development of heart disease over time

By Dr. Mercola

Increasing research has highlighted the significant risk of excessive sitting for adults, but "grown-ups" are not the only ones at risk. Children spend more than 60 percent of their waking day sedentary, and by some estimates children sit an average of 8.5 hours a day.

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