After too way to many years of beating my feat up doing Tae Kwon Do, my feet have little to no circulation, and get cold very easy.
What I found that helps keep the feet from getting too cold after hiking in to a hunting location, is to remove my boots and socks, take 10 minutes to let the sweat evaporate a bit and put on a new pair of dry wool socks.
This has made a good bit of difference in keeping my feet warmer, especially when I sit on a location for awhile.