So in keeping with not letting my tort camp out at night in the winter, I'm wondering what exactly the long term consequences of cold nights are on a tortoise? As I said in a previous post, there are many people here in SoCal who never heat their tortoises, and they claim they are just fine. Since we can't seem to see any immediate effect of cold nights on them, what are the talking points in case I am able to convince those people that they are wrong? Is it digestive or?? And what do we consider a minimum nighttime temperature for those torts like mine who do like to "rough it" ?