Rest should always be available ?
I find it strange that you can only rest if you are hurt. Realistically, if you were freezing cold, you might want to curl up in a sleeping bag just to keep warm, not exclusively to heal. I also think that in terms of game balance, it would make more sense. Due to the outside temperature, as the game currently plays it seems like an *asset* to take the most minor injury possible, simply so that the option to to rest becomes available. This is the reason I think it would be a significant asset to the game to add.
I am actually kindof surprised that it hasn't been suggested already. If it was, it didn't show up in the search bar, and I apologize.