To prevent moisture in your breath from freezing, condensing, and wetting your sleeping bag, what should you do before going to sleep?

Keeping a cloth wrapped around your head before going to sleep in cold conditions can help to trap warmth and create a barrier that limits the amount of moisture in your breath from escaping into the sleeping bag. By doing this, you reduce the likelihood of moisture condensing inside the sleeping bag, which can lead to a damp and chilly environment as you sleep.

This method helps to maintain a drier sleeping environment and is particularly useful in cold weather where the risk of moisture freezing is high. It is essential to use a breathable material that will provide warmth without trapping excess moisture against your skin.

Other options may not effectively prevent moisture accumulation inside the sleeping bag or may prove uncomfortable during sleep.