Just a layman, so I'm in no position to give sound advice, but it does sound like a blood circulation issue to me. I get it too sometimes if I sit down for very long stretches, especially in very hot weather. It's usually just the feet though. The worst I ever had it was on a 14 hour hell-ride in an unairconditioned bus in the north of Thailand (38 degrees with 97% humidity). There were over 80 ppl on the bus, so no one could move an inch. Not being able to see the veins in your feet is a tell-tale sign.
The same issue occurs in aeroplanes and can lead to (or is already?) Deep Vein Thrombosis (DVT) in extreme cases. Airlines have finally owned up that they've known about it for years, and have been forced to change their seating arrangements in response. There's a lot more info on DVT nowadays, but beware the google search if you suffer from hyperchondria lol.
Again, I've found that exercise soon remedies the problem for me.
BTW, weight and fitness is not the only factor from what I've heard. In fact, our former cricket captain, Steve Waugh, got DVT on the plane from England to Australia. He had just had surgery on his leg (knee I think). DVT can lead to other complications too.
Not sure what it means that it's only happening in only one leg though. I think it would be a good idea to ask your GP about it in any case.
EDIT: btw your user name wins my vote as the cleverest :happy:
Modifié par Peeker2009, 25 janvier 2010 - 06:01 .