AÂ new studyÂ published in the Annals of Internal Medicine found sitting for excessively long periods of time is a risk factor for early death. They found a direct relationship between time spent sitting and your risk of early mortality of any cause, based on a study of nearly 8,000 adults. As your total sitting time increases, so does your risk of an early death. Get up and move around. Set a timer on your phone, clock or kitchen timer.