With the number of people suffering from heart problems constantly going up, it is in the best interest of everyone to get to know the main contributing factors. A human heart is one of the most depended-upon organs in the body. However, if one has been spending the better part of his or her day sitting, this could probably be some shocking news. Recent research has shown that people who spend most of their time sitting could be endangering their lives. Prolonged sitting increases the risk of heart failure among many people, especially men.