By placing a couple on your body it will help at least some. Maybe unlace your boots and put one in each boot to help keep your feet warm, seeing as how they will get cold first or faster than the rest of you.
Or if you are not going to move / not able to move, go into a sleeping bag and drop one or two into to the bag.
JYD #134
"Well opinions are like @$$holes, everybody has one." - Clint Eastwood
