If the recent polar vortex has you questioning why you still live in western New York or if the gloomy winter weather in general has you feeling less than upbeat - you are not alone. You may be dealing with a common issue known as seasonal affective disorder. It saps your energy and might be the reason why you’re craving more sleep or why you’re having a hard time focusing on specific tasks. We learn why this happens and how can we combat these symptoms on this edition of Need to Know.