Desk jockeys have long been warned that sitting is as bad as smoking, exempting those with active occupations. No more. Standing may be worse. Of 7,320 workers, those whose jobs kept them on their feet (factory workers, waiters) were twice as likely to develop heart disease than those who sat, an American Journal of Epidemiology study finds.
Always being upright can cause blood to pool in your legs, rather than circulate back to the heart. Standing increases oxidative stress, triggering inflammation. Over time, this can raise cardiovascular risks. Sit every so often to give your body a break.