Sleeping warm is one of the factors that can make or break a cold weather adventure. Remember the body cools down during sleep and the blood is drawn from the extremities (feet and hands) to the center or core of the body, so proper insulation must be provided to prevent heat loss.
To stay warm and get a good night's sleep on your next camping or backpacking trip, try some or all of the tips below:
2. If you must go, use a pee bottle, it’s better than exposing yourself to the elements. Just make sure you label the bottle! Besides, holding it in requires your body to waste energy (calories) trying to heat up the water in your bladder to 98.6 degrees.
3. Eat a big dinner with lots of calories. Calories are a unit of heat, without them the furnace won’t burn hot.
4. Keep a snack with you for the middle of the night, so if you do wake up cold you can replenish lost calories and warm back up again. (Editor's note: in bear country, always keep foods safely stored in air tight containers - away from tents - to avoid attacks.)
5. Go to bed warm. Warm up by taking a brief hike around camp or doing some jumping jacks. If you wrap a frozen salmon in a sleeping bag, will it stay frozen? Yes, because your sleeping bag will insulate cold or heat, just like a Thermos.
6. Select a protected campsite out of the wind and off the valley floor and other low areas where cold air settles. A good rule is to be about 50 feet above the valley floor.
7. Fluff up your sleeping bag with vigor to gain maximum loft before you climb in.
8. Use a good insulating pad between you and the ground. Studies show that what you have under you is more important in keeping you warm than what's on top of you.
9. Wear a stocking hat to bed, you lose most of your body heat through your head.
11. Roll the moisture out of your bag each morning when you get up (roll from foot to head), then leave it open until it cools to air temperature. If weather permits, set it out to dry.
12. Use a layered sleeping system (i.e. sleeping bag, liner, half bag, bivy sack). A layered system helps to remove the frost buildup that naturally occurs when your body warmth meets the cold air (a concern if you’re staying out multiple nights).
13. Avoid overheating at night and make sure you go to bed dry. Being too warm produces perspiration, so vent your bag if needed or take off your stocking hat.
14. Make sure your feet are as dry as possible before going to bed. This can be done by having a pair of dry sleeping socks or polarguard booties in your bag for sleeping only. Also, you can “dry” wash your feet with a good foot powder that contains aluminum chlorohydrate, which helps dry the skin and reduce perspiration.
15. Use a “sleeping suit”, which is a clean and dry pair of long underwear stored in your sleeping bag.
16. Wear loose fitting clothing to bed so it doesn’t restrict circulation.
17. Keep your sleeping gear clean. Dirt clogs air spaces in the material and reduces insulation value making it harder to stay warm.
18. If you have cold feet, sleep with your feet together in an elephant foot or half bag. It’s a bag that uses the principle of the buddy system, where the feet share heat instead of being isolated, much like mittens are warmer than gloves. The bag slips over your feet and legs and then drawstrings pull it shut or you could just use a fleece jacket wrapped around the same area.
19. Fill a water bottle with hot water before you go to bed and
then strategically place it at any cold spots in your sleeping
bag. Just make sure it has a screw on lid like the Nalgene bottles.
A variation of this is to use disposable heater packs or hand
warmers, which costs a little extra money. Or, in the old days
they would take some heated rocks from around the campfire and
place them in a wool sock. Just make sure they're not too hot.
20. Finally the old stand by...to stay warm snuggle up to someone or use the Buddy System (share warmth with others).
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