Sitting all day facing the computer not only makes your body sore, but also lowers your heart health. The reason is, sitting for too long can cause blood clots that can worsen blood circulation in the body. If you do spend time working in a sitting position, don't forget to do some stretching at work or at home. Another way to maintain a healthy heart that you can try is to take the stairs instead of the elevator and walk down the yard or office corridor. That way, you stay active even if you have to work.