Robert C. Cline wrote: > > That is interesting. Exposure to cold increases thyroid activity and > increases BMR which would account for "warmer hands." > > Could this acclimitazation, if in fact his test was valid, counter capacity > for survival through increased heat loss? > > To enhance survival, one would think that Acclimitization to cold would > cause the capilaries in the skin to descrease blood flow, rather than > increase it. Not only would you need to "stoke the fires," but you would > need even more so, to preserve the heat. Like the weddell seals. > > But, valid studies have shown that BRM is increased in acclimitazation. > ..and in humans, It takes awhile for the "thermostat" to reset. Aren't Tibetan monks able to sit in the cold in wet clothing and the garments dry quickly as if a warm dry room? Also it is evident, emperically, that some people can take the cold better than others. I remember seeing a fellow in my neighborhood who walked his dog in the dead of winter (15-20 degrees) in just shirt sleeves and tie and wandering with the critter for 20 minutes or more in blustery Central Park. I am, for some reason, blessed with warm hands. It takes a lot for them to get cold and even when working outdoors they remain warm to the touch. There is a range of tolerance. Some of it can be trained and some of it is in the individual inately. And some people do suffer from cold ears and cold hands and cold feet. ralph -- ----------------------------------------------------------------------- Ralph Diaz . . . Folding Kayaker newsletter PO Box 0754, New York, NY 10024 Tel: 212-724-5069; E-mail: rdiaz_at_ix.netcom.com "Where's your sea kayak?"----"It's in the bag." ----------------------------------------------------------------------- *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced outside PaddleWise without author's permission Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Tue Jan 11 2000 - 15:04:23 PST
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