BOTTOM LINE: Take a short break (just a few minutes) every hour while sitting to get up, stretch, and take a short walk to get the blood circulating. If you sit a lot (i.e., at least 8 hours daily), performing at least 60 minutes of moderate exercise (e.g., brisk walking) every day may lessen mortality rate associated with being sedentary. By doing this, you can literally increase your life expectancy.
Brian Danley, CFT
"Motivation is what gets you started. Habit is what keeps you going."