Originally Posted by
franswa
Another good way to be certain that your core stays warm is to protect your hands, feet and head properly from the cold. If those three things begin to get cold, guess where the heat is redistributed from? Yup, your core.
In my experience, it works the other way around: keep your core warm and your extremities stay warm, too. Circulating cold blood into your hands and feet isn't going to warm them up regardless of how well shielded they are. I've had frozen hands and toes riding in 40°F temps because of a cold core but been toasty warm 25° colder thanks to being properly dressed.