Q: I am trying hard this year to not gain weight during the holidays. Do I really have to give up the celebratory champagne or rum-laced eggnog?
A: Your instincts are right-on: Alcohol can make it hard to avoid weight gain -- all those empty calories. But right off the bat, we’d like to say creamy, eggy, super-sweet, rum-y eggnog is a much more risky choice than one small glass of champagne. A cup …