iStock/ThinkstockBy DR. JENNIFER ASHTON, ABC News Senior Medical Contributor

Previous studies have proven a link between a sedentary lifestyle and poor health. But a sweeping new study puts its impact in stark focus.

Researchers fitted 2,500 people with wearable devices like Fitbits for eight days and found that every extra hour a day of inactivity translated into a 22 percent increased risk of diabetes.

This should serve as an important reminder to keep moving. Diabetes is a major risk factor for blindness, heart disease, kidney and vascular problems.

Here’s my prescription:

• Whenever possible, stand rather than sit.

• If you work at a desk, make sure to get up for a brief walk every hour.

• Try to take the stairs at least once a day.

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