People experience deep calf or thigh pain which begins after extended periods of sitting during flights, car rides or when they spend a complete day in a seated position. People describe this pain as a deep ache which feels like a cramp that appears suddenly, and differs from typical muscle fatigue.
Long sitting slows blood flow in the legs, which can cause a clot to form in a deep vein (DVT). The risk level increases when flights last longer than 4 hours, and when people take long car trips and when they have extra risk factors which include being overweight, pregnant or have had surgery recently.
