10 Ways Sitting Wrecks Your Body

Poor Circulation in Your Lower Extremities
Fluid buildup in your legs and feet increases your odds of a number of problems, and can make walking uncomfortable. © arztsamui/iStock/Thinkstock

When you sit for more than an hour at a time, you increase your risk of developing peripheral edema -- that's swelling caused when fluid builds up in the tissues in your lower extremities (legs, ankles, and feet). The lack of circulation also ups your odds of developing or worsening varicose veins, suffering from thrombophlebitis, or suffering a blood clot, specifically deep vein thrombosis.

Poor blood flow doesn't just affect your lower extremities; it also can cause damage to other organs in your body as well as cause you to feel dizzy, numb or as though you're in a mental fog.