It would be interesting to know the ratio of shorthaul to longhaul crew on this one!
Certainly on shorthaul, we don't get a minute to sit down pretty much all the time.
Is it literally the action of being seated - or also the dry atmosphere/oxygen levels?
It's a scary condition - and have offloaded a couple of pax with suspected DVT in the last 3 years.
We always take a low dose aspirin when flying as passengers, and wear the dvt socks - and drink plenty of water