Cold Feet

I read somewhere a long time ago an article that said something like this: native Tibetans are well suited to serve as mountain guides in adverse weather conditions because they acclimate to the cold weather. Their feet don't freeze while they sleep in their tents because the blood supply to their feet is short circuited, thus reducing the need for active blood circulation and the resultant pain as the body attempts to keep the feet warm. Over the years, I've tried, or at least wished, to develop the Tibetan trait, but so far no such luck. Sometimes, even when sleeping conditions are not particularly cold, my feet get so cold I can't sleep. Regardless of how many blankets are on the bed, no matter how hard I try to wrap the blankets and even the comforter snugly around each foot, my feet still stay cold, and prevent sleep. Those are the times I try to channel those Sherpa guides, but all in vain. Worse, and as a testament to my laziness, I know what the perfect solution is: all I need to do is get out of bed and put on a pair of socks.