We've been off grid since June of this year. We are living in a cabin and it is about 10 degrees cooler here than if you went to the closest town. Great!! <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/smile.gif" style="border:0px solid;" title="smile"> However, I have noticed that as a family we've been getting sick alot more than we are used to. I rarely ever get sick, but have been sick 3 times since we moved. And, my whole family is sick now. Different types of illnesses, so I don't think it would allergies. Also, we've made sure our cabin is mold free and etc... The only thing we have been exposed to other than fresh mountain air, nice spring water, and plenty of outdoor time, is extreme temp. changes throughout our day. For example, it will get to like 42F at night and like 80F during the day. So, we wake up cold, and by the end of the day we are shedding clothes. I've never put much stock in the temp. being a cause of illness, but I'm beginning to wonder. I used to consider myself super immunity girl!!!