I learned this over the winter camp out this year if ur camping in the cold get ya a few hot hands and open em up and about an hour before you go to bed toss em into the bottom of ur sleeping bag not only will it help keep ya warm but if or when ur toes get cold move feet around till ya find 1 and place ur feet next to it and ur back to not being cold
I learned this from seekerbp this wkend i dont think he would mind me sharing it with others was a helpfull tip for the winter campout for sure