How to keep warm in your sleeping back

• don’t take wet clothes in your sleeping back, rather go for a smooth round of skiing before going to bed à this gets you warm, activates the metabolism and dries your clothes
• getting warmer you take of more and more clothes in the bag
• take inside: gas bottle, boots in a plastic bag
• leave outside: wet clothes, hard shell gear
• have two camping mats, one closed and not insulated, one insulated, putt he silvery stuff up so you lie on it and it reflects your heat