A new study suggests that sitting for prolonged periods of time can significantly increase your risk of heart disease, diabetes, cancer and early death. Even for .\rbr\rbrIs sitting too much killing you? The Solution To Sitting: Get Your Free Audiobook: ---Links to follow us .\rbr\rbr\rbr\rbrDid you know that sitting is one of the most dangerous things you do? These are 25 reasons that sitting down all day (aka your office job) is killing you.