Long to-do lists and stress can affect health (and weight gain) during the holiday season -- but following some simple recommendations can help people maintain their well-being, according to Dr. Scott Bautch, past president of the American Chiropractic Association's Council on Occupational Health.

His tips for staying healthy:

Stay hydrated! Drink at least one half your body weight of water in ounces each day. (i.e. a 200 pound person needs at least 100 ounces per/day) Coffee, tea, soft drinks and alcohol are dehydrators and shouldn't be substituted for water.