Join Date: Jan 2003
Location: Manchester, United Kingdom
Programs: Hilton Gold, Priority Club Platinum (until December), FB Explorer, BA Blue, M&M Pleb
Posts: 8,616
Lifting one leg up at a time, as far as I can and rotating my foot approx 20 times works wonders for me and removes any discomfort for a while. It's not a full substitute for getting up and having the occasional walk around the cabin though.