When you’re in pain, it may be hard to make yourself get up and move. But consider this: A growing body of evidence suggests that spending too many hours sitting is hazardous to your health. Habitual inactivity raises risks for obesity, diabetes, cardiovascular disease, deep-vein thrombosis, and metabolic syndrome.
Researchers aren’t sure why prolonged sitting has such harmful health consequences. But one possible explanation is that it relaxes your largest muscles. When muscles relax, they take up very little glucose from the blood, raising your risk of type 2 diabetes.