Quote:
It appears that DVT is influenced by certain factors, some of which are hereditary.
Unfortunately, advice for reducing risk includes not only moving around and getting adequate hydration, but also avoiding alcohol and caffeine.
One of the other risk factors is obesity, and while it's hard to be sure based on a headshot,
Chris Staniforth looked like he was carrying a few extra pounds.
Long story short: sitting without moving for a long period of time is not a safe activity. If you're consuming caffeine and/or alcohol (seriously, how many gamers do you know who DON'T consume one or the other while playing) and are obese, it's just worse.
Take breaks when gaming, even if it's just getting up and walking around the room after a wipe. Do those silly calf and leg isometrics they show you on international flights. And stay hydrated.