As far as I know... I'm not overweight, if I'm sitting down I try to stand up and walk around every hour, and there aren't any clotting disorders that run in my family that I know of. My grandpa just had a dvt and pulmonary embolisms a couple months ago and they ran a bunch of tests on him and couldn't find a genetic reason for it. My uncle also recently had a co-worker who's son died at 28 from one. Its hard for me to not see any leg pain as a dvt right now, but I'm getting frustrated with myself for thinking I'm dying all of the time from one!