Always dress in layers when you are out hiking in the winter. There are numerous reasons for this and they all make a lot of sense if you have ever experienced a hike in a snow storm over Blood Mountain! Dressing in layers will prevent body heat loss. There is technology out now that you cannot do without. Wear a light weight, water repellant, wicking fabric such as Under Armor on your skin. Then a light weight warmer fabric over that. Then for the outer layer wear a weather resistant fabric such as an all-weather coat.
If it is really cold you may have to wear another thicker layer that is lined with fleece or Sherpa over top of the second layer. Not only does wearing layers help you retain body heat but it also allows you to be able to get comfortable quickly and without digging through your backpack for a change of clothes on the run. When you are well into your hike you do not want to stop and change clothes because you are too hot after warming up.
Simple remove your pack, take off the outer coat, take off the inner shirt and put the coat back on and walk on. The shirt can be stuffed into a pack pocket until you stop for lunch or dinner. It is more convenient to just pull off a layer than to change clothes. Always protect your feet in the snow too, just because they may not be sweating as much as the summer hikes does not mean you cannot get athletes foot. So tip three, change your socks when they get wet or even damp as often as it takes. Your body will be warmer with dry feet.
Now here is a sec ret that not many have tried I bet. Only to be used in an emergency and for a short amount of time due to the toxicity issue. But those fire starter sticks, a whole stick will burn for about 5 whole minutes before you have to light another. If you have a tent, which I suggest for winter hikes, you can close the vents and light one of those sticks and let it burn in one of your cooking pans. Sit the pan on something like a rock in the center of your tent. The rock will prevent the pan from burning the tent floor.
As that stick burns you are going to feel that tent heat up and I mean it heats up a lot. Paired with you in your sleeping bag, fully clothed you are going to get very warm. Possibly it will run you out of the tent but it will definitely take the chill off and quick! Make sure you do not sit with your face over the burning stick it isn’t real healthy but it does burn clear, there is no smoke to worry about. The heat from that pan alone will act like a small heater. Have fun hiking this winter but be prepared with these tips.