If you crave carbs during the short days of Winter, you are not alone. There seem to be a couple of physiological factors involved. Since there is less sunlight, due to shorter days, our bodies make less vitamin D (aka the sunshine vitamin). This vitamin helps keep your mood nice and sunny since it naturally boosts serotonin levels. Serotonin is the feel-good brain chemical that modulates mood, emotion, and sleep. Carbs provide a serotonin rush, so eating all that bread and pasta is a means of self-medicating with food sources. The good news is exercise also creates serotonin, so don't skimp out on your workouts. You need them during these long nights of Winter to keep your spirits up. Plus, research shows that moderate to hard workouts also boost your body temperature for hours after exercise. Save some calories and dough on your heating bill and get your sweat on!
Flickr User Michell Zappa