It is dreary, windy, snowy, and bitter cold outdoors most of the fall and winter months for Americans. One of the quickest times of year to gain weight is through the holiday months from Halloween to New Years. Winter is also a challenging time to fit in a workout when you want to cuddle up with a good book by the fire at home. With less daylight and more comfort foods in the cupboards, spending time at the gym is the last place you want to be. But did you know without exercise your sleep can greatly affect your health?