A tip from the U.S. National Institutes of Health website:
“To prevent hypothermia, make sure your home is warm enough. Set your thermostat to at least 68° to 70° [20-21C]. Even mildly cool homes with temperatures from 60° to 65° [16-18C] can trigger hypothermia.”
Do they also advise not going outdoors when it is below 65º outside??