If you're out with others when it's cold, be aware of the "umbles": Stumbles, fumbles, mumbles and grumbles. These can be relatively early external signs of a

If you're out with others when it's cold, be aware of the "umbles": Stumbles, fumbles, mumbles and grumbles. These can be relatively early external signs of altered mentation and potentially of the on-set of hypothermia. Hypothermia can occur even in fairly warm temperatures, too; you don't need freezing temperatures. When carrying food, remember you're going to be eating a whole lot more when it's cold and you're exercising. Avoid cotton clothing, as that gets and stays brutally cold when it gets wet. Wool or synthetics work much better.