Hibernation-less winter.

Most people think that Summer is when you get lean and winter is when you gain weight. This theory is typically true due to one main fact; people tend to be less active in the winter because..well. it's cold. Nevertheless, all science points to the fact that humans should actually lose weight in the winter because the cold temperatures increase the rate of our metabolisms which causes us to burn more calories. This is the backbone of the concept of hibernation. Animals devour as much food as they can before the winter and become "insulated" for the cold temperatures and pack on extra calories due to the increase in metabolism. If one is able to get their butt in the gym and do their usual routine winter weight loss is possible. Remember: 1 lb=3,500 calories. Which means if you eat 500 LESS calories per day for a week you should, in theory, lose 1 lb that week. However, if you exercise daily for an hour or so at a moderate to intense level you will burn 500-800 calories; so, you will lose weight even faster. But remember that calories are energy and are necessary to function throughout the day so don't starve yourself.